A. Basis of Presentation and Summary of Significant Accounting Policies

The accompanying interim unaudited condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and applicable rules and regulations. Pursuant to such rules and regulations certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) have been condensed or omitted. In management’s opinion, all adjustments necessary for a fair presentation of the financial position, results of operations and cash flows have been included and are of a normal, recurring nature. The results of operations for the three and six months ended December 31, 2018 are not necessarily indicative of the operating results for the full fiscal year or any future periods.

You should read the financial statements and these notes, which are an integral part of the financial statements, together with our audited financial statements included in our Annual Report on Form 10-K for the fiscal year ended June 30, 2018 (“2018 Annual Report”). The accounting policies used to prepare the financial statements included in this report are the same as those described in the notes to the consolidated financial statements in our 2018 Annual Report unless otherwise noted below.

Recently Adopted Accounting Pronouncements

In April 2017, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2017-10, Revenue from Contracts with Customers (Topic 606)(ASU 2017-10), which amends and adds clarity to certain aspects of the guidance set forth in the revenue standard ASU 2014-09 related to identifying performance obligations and licensing. In May 2017, the FASB issued Accounting Standards Update No. 2017-11, Revenue Recognition (Topic 605) and Derivatives and Hedging (Topic 815) (ASU 2017-11), which amends and rescinds certain revenue recognition guidance previously released within ASU 2014-09. In May 2017, the FASB issued Accounting Standards Update No. 2017-12, Revenue from Contracts with Customers (Topic 606) (ASU 2017-12), which provides narrow scope improvements and practical expedients related to ASU 2014-09. All of these ASUs have been codified under Accounting Standards Codification (ASC) 606.

ASC 606 outlines a single comprehensive model for companies to use in accounting for revenue arising from contracts with customers and supersedes most current historical revenue recognition guidance, including industry-specific guidance. The core principle of the revenue model is that an entity recognizes revenue to depict the transfer of promised goods and services in an amount that reflects the consideration to which the entity expects to be entitled to receive in exchange for those goods and services. In addition, the new standard requires that reporting companies disclose the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with their respective customers.

The new revenue standard is required to be applied either retrospectively to each prior reporting period presented or prospectively with the cumulative effect of initially applying the standard recognized at the date of the initial application, supplemented with certain disclosures related to the effect of adoption on previously reported amounts, if any (the modified retrospective method). We adopted the standard on July 1, 2018 for contracts that were not completed before the adoption date, using the modified retrospective method. We evaluated the effect of the standard and concluded it was not material to the timing or amount of revenues or expenses recognized in our historical consolidated financial statements. As a result, we concluded the application of the standard did not have a material effect that requires a retrospective adjustment for reporting disclosure purposes to any previously reported amounts in our historical consolidated financial statements.

On December 22, 2017, the SEC issued guidance under Staff Accounting Bulletin No. 118, Income Tax Accounting Implications of the Tax Cuts and Jobs Act (“SAB 118”) directing taxpayers to consider the impact of the U.S. legislation as “provisional” when the taxpayer does not have the necessary information available, prepared or analyzed (including computations) in reasonable detail to complete its accounting for the change in tax law. In accordance with SAB 118, we calculated our taxes for fiscal 2018 to the best of our ability. Our tax expense for fiscal 2018 was finalized by the end of the one-year measurement period ending December 22, 2018. The impact of finalizing our fiscal 2018 provision during this period did not result in a material impact on our consolidated financial statements.

In February 2018, the FASB issued ASU 2018-03, Technical Corrections and Improvements to Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. ASU 2018-03 is intended to improve certain aspects of recognition, measurement, presentation, and disclosure of certain financial instruments, i.e. forward contracts, purchased options and option liabilities. ASU 2018-03 is effective for us beginning in our first quarter of fiscal 2019. This ASU did not have a material impact on our consolidated financial statements.

Recently Issued Accounting Pronouncements

In March 2016, the FASB issued Accounting Standards Update No. 2016-02, Leases (Topic 842) (ASU 2016-02), which amends existing standards for leases to increase transparency and comparability among organizations by requiring recognition of lease assets and liabilities on the balance sheet and requiring disclosure of key information about such arrangements. In July 2018, the FASB issued ASU 2018-10, Codification Improvements to Topic 842, Leases. This ASU affects narrow aspects of the guidance issued in the amendments in ASU No. 2016-02 including those regarding residual value guarantees, the interest rate implicit in the lease, lessee reassessment of lease classification, lessor reassessment of lease term and purchase option, variable lease payments that depend on an index or a rate, investment tax credits, lease term and purchase option, transition guidance for amounts previously recognized in business combinations, certain transition adjustments, transition guidance for leases previously classified as capital leases under Topic 840, transition guidance for modifications to leases previously classified as direct financing or sales-type leases under Topic 840, transition guidance for sale and leaseback transactions, impairment of net investment in the lease, unguaranteed residual asset, effect of initial direct costs on the interest rate implicit in the lease, and failed sale and leaseback transactions. These ASUs will be effective for us beginning in our first quarter of fiscal 2020. We are currently evaluating the impact these ASUs will have on our consolidated financial statements.

In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. ASU 2017-12 is intended to improve and simplify accounting rules around hedge accounting and improve the disclosures of hedging arrangements. We are currently evaluating the impact of adopting the new standard on our consolidated financial statements. ASU 2017-12 will be effective for us beginning in our first quarter of fiscal 2020.

In February 2018, the FASB issued ASU 2018-02, Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. ASU 2018-02 allows for a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. We are currently evaluating the impact of adopting the new standard on our consolidated financial statements. ASU 2018-02 will be effective for us beginning in our first quarter of fiscal 2020.

Other recently issued accounting pronouncements not discussed in this report did not have, or are not believed by management to have, a material impact on our present or future financial statements.

Net Income per Common Share

We compute net income per common share using the weighted average number of common shares outstanding during the period, and diluted net income per common share using the additional dilutive effect of all dilutive securities. The dilutive impact of stock options accounts for the additional weighted average shares of common stock outstanding for our diluted net income per common share computation. We calculated basic and diluted net income per common share as follows (in thousands, except per share data):

No shares related to restricted stock or options were excluded for the three or six months ended December 31, 2018. We excluded shares related to stock options totaling 135,000 and shares related to restricted stock totaling 813,665 for the three months ended December 31, 2017, as their impact would have been anti-dilutive. No shares related to stock options or restricted stock were excluded for the six months ended December 31, 2017.

Revenue Recognition

We record revenue based on a five-step model which includes: (1) identifying a contract with a customer; (2) identifying the performance obligations in the contract; (3) determining the transaction price; (4) allocating the transaction price among the performance obligations; and (5) recognizing revenue when the various performance obligations are satisfied.

Revenue is measured as the net amount of consideration expected to be received in exchange for fulfilling one or more performance obligations. We identify purchase orders from customers as contracts. The amount of consideration expected to be received and revenue recognized includes estimates of variable consideration, including estimates for early payment discounts and volume rebates. Such estimates are calculated using historical averages adjusted for any expected changes due to current business conditions and experience. We review and update these estimates at the end of each reporting period and the impact of any adjustments is recognized in the period the adjustments are identified. In assessing whether collection of consideration from a customer is probable, we consider both the customer's ability and intent to pay that amount of consideration when it is due. Payment of invoices are due as specified in the underlying customer agreement, typically 30 days from the invoice date, which occurs on the date of transfer of control of the products ordered to the customer.

Revenue is recognized at the point in time that our performance obligation is fulfilled, and control of the ordered products is transferred to the customer. This occurs when the product is shipped, or in some cases, when the product is delivered to the customer.

We provide early payment discounts to certain customers. Based on historical payment trends, we expect that these customers will take advantage of these early payment discounts. The cost of these discounts is reported as a reduction to the transaction price. If the actual discounts differ from those estimated, the difference is also reported as a change in the transaction price.

Except for product defects, no right of return exists on the sale of our products. We estimate returns based on historical experience and recognize a returns liability for any estimated returns. As of December 31, 2018, we have no known returns liability.

On August 7, 2017, we entered into three agreements (“Agreements”), with The Juice Plus+ Company LLC (“Juice Plus+”). The Agreements are an Exclusive Manufacturing Agreement, a Restricted Stock Award Agreement, and an Irrevocable Proxy. Pursuant to the Exclusive Manufacturing Agreement, Juice Plus+ has granted us exclusive rights to manufacture and supply them with certain of their products within 24 countries where Juice Plus+ currently sells those products. Pursuant to the Restricted Stock Award Agreement, NAI granted 500,000 shares of NAI common stock to Juice Plus+, (the “Shares”), and Juice Plus+ agreed the Shares are subject to certain restrictions and risk of forfeiture. Pursuant to the Irrevocable Proxy, Juice Plus+ also granted the NAI Board of Directors the right to vote the Shares that remain subject to the risk of forfeiture. Each Agreement is for a term of 5 years, and each may be terminated by either party only upon the occurrence of specified events. The expense associated with the Shares granted to Juice Plus+ is recorded as a reduction to revenue. We recorded $245,000 of expense during the three months ended December 31, 2018 and $490,000 for the six months ended December 31, 2018 as a “Non-cash Sales Discount” which is an offset to net sales. We recorded $245,000 of expense during the three months ended December 31, 2017 and $408,000 during the six months ended December 31, 2017.

We currently own certain U.S. patents, and each patent’s corresponding foreign patent applications. All of these patents and patent rights relate to the ingredient known as beta-alanine marketed and sold under our CarnoSyn® and SR CarnoSyn® trade names. We recorded beta-alanine raw material sales and royalty and licensing income as a component of revenue in the amount of $4.4 million during the three months ended December 31, 2018 and $9.8 million during the six months ended December 31, 2018. We recorded $4.0 million during the three months ended December 31, 2017 and $9.8 million during the six months ended December 31, 2017.  These royalty income and raw material sale amounts resulted in royalty expense paid to the original patent holders from whom NAI acquired its patents and patent rights. We recognized royalty expense as a component of cost of goods sold in the amount of $178,000 during the three months ended December 31, 2018 and $441,000 during the six months ended December 31, 2018. We recognized $160,000 during the three months ended December 31, 2017 and $444,000 during the six months ended December 31, 2017.

Notes Receivable

On September 30, 2017, we accepted a 12-month note (Loan Agreement) from Kaged Muscle, LLC (“Kaged Muscle”), one of our contract manufacturing customers, in exchange for $1.5 million of trade receivables due to us from Kaged Muscle. On September 30, 2018, we entered into a First Amendment (the “First Amendment”) with Kaged Muscle in connection with the Loan Agreement. The First Amendment modified the Loan Agreement and related promissory note by extending the maturity date from September 30, 2018 to December 28, 2018 in exchange for an extension fee in the amount of $25,000. Kaged Muscle is one of our fastest growing sports nutrition customers and we executed this note receivable conversion, and subsequent amendment, to assist them with their near term financing needs. The note carried an interest rate of fifteen percent (15%) per annum with payments of interest only. The note was paid in full before the amended maturity date.  In association with this note, we recognized $46,000 in interest income during the three months ended December 31, 2018 and $104,000 during the six months ended December 31, 2018. During the three and six months ended December 31, 2017 we recognized $58,000 in interest income associated with this note from Kaged Muscle.

Stock-Based Compensation

We have an omnibus equity incentive plan that was approved by our Board of Directors effective October 15, 2009 and approved by our stockholders at the Annual Meeting of Stockholders held on November 30, 2009 ("2009 Plan"). Under the 2009 Plan, we may grant nonqualified and incentive stock options and other stock-based awards to employees, non-employee directors and consultants.

We estimate the fair value of stock option awards at the date of grant using the Black-Scholes option valuation model. The Black-Scholes option valuation model was developed for use in estimating the fair value of traded options that have no vesting restrictions and are fully transferable. Option valuation models require the use of highly subjective assumptions. Black-Scholes uses assumptions related to volatility, the risk-free interest rate, the dividend yield (which we assume to be zero, as we have not to date ever paid any cash dividends) and employee exercise behavior. Expected volatilities used in the model are based on the historical volatility of our stock price. The risk-free interest rate is derived from the U.S. Treasury yield curve in effect in the period of grant. The expected life of stock option grants is derived from historical experience. The fair value of restricted stock shares granted is based on the market price of our common stock on the date of grant. We amortize the estimated fair value of our stock awards to expense over the related vesting periods.

We recognize forfeitures as they occur.   

We did not grant any options during the three month or six month periods ended December 31, 2018 or 2017. All remaining outstanding stock options are fully vested. No options were exercised during the three month period ended December 31, 2018. During the six months ended December 31, 2018, 5,000 options were exercised. No options were exercised during the three month or six month periods ended December 31, 2017. There were no forfeitures during the three month or six month periods ended December 31, 2018. There were no forfeitures during the three months ended December 31, 2017. During the six months ended December 31, 2017 5,000 options were forfeited.

During six months ended December 31, 2018, we granted a total of 15,000 restricted stock shares to a new member of our management team. We did not grant any shares to employees during the three months ended December 31, 2018, or the three or six months ended December 31, 2017. Our net income included stock based compensation expense of approximately $400,000 for the three months ended December 31, 2018, and $809,000 for the six months ended December 31, 2018. Our net income included stock based compensation expense of approximately $302,000 for the three months ended December 31, 2017, and $603,000 for the six months ended December 31, 2017.

Fair Value of Financial Instruments

Fair value is defined as the exchange price that would be received to sell an asset or paid to transfer a liability (i.e., the “exit price”) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. We use a three-level hierarchy for inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that observable inputs be used when available. Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from independent sources. Unobservable inputs are inputs that reflect our assumptions about the inputs that market participants would use in pricing the asset or liability and are developed based on the best information available under the circumstances.

The fair value hierarchy is broken down into three levels based on the source of inputs. In general, fair values determined by Level 1 inputs use quoted prices (unadjusted) in active markets for identical assets or liabilities that we have the ability to access. We classify cash, cash equivalents, and marketable securities balances as Level 1 assets. Fair values determined by Level 2 inputs are based on quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active and models for which all significant inputs are observable or can be corroborated, either directly or indirectly by observable market data. Level 3 inputs are unobservable inputs for the asset or liability, and include situations where there is little, if any, market activity for the asset or liability. These include certain pricing models, discounted cash flow methodologies and similar techniques that use significant unobservable inputs.

As of December 31, 2018, and June 30, 2018, we did not have any financial assets or liabilities classified as Level 1, except for assets and liabilities related to our pension plan. We classify derivative forward exchange contracts as Level 2 assets. The fair value of our forward exchange contracts as of December 31, 2018 was a net asset of $2.5 million. The fair value of our forward exchange contracts as of June 30, 2018 included a net asset of $55,000 and a net liability of $55,000, with no right of offset. As of December 31, 2018, and June 30, 2018, we did not have any financial assets or liabilities classified as Level 3. We did not transfer any assets or liabilities between Levels during fiscal 2018 or the six months ended December 31, 2018. 

Concentrations of Credit Risk

Financial instruments that subject us to concentrations of credit risk consist primarily of cash and cash equivalents and accounts receivable. We place our cash and cash equivalents with highly rated financial institutions. Credit risk with respect to receivables is concentrated with our three largest customers, whose receivable balances collectively represented 73.0% of gross accounts receivable at December 31, 2018 and 76.6% at June 30, 2018. Additionally, amounts due related to our beta-alanine raw material sales were 11.9% of gross accounts receivable at December 31, 2018, and 17.3% of gross accounts receivable at June 30, 2018. Concentrations of credit risk related to the remaining accounts receivable balances are limited due to the number of customers comprising our remaining customer base.

B. Inventories, net

Inventories, net consisted of the following (in thousands):

C. Property and Equipment

Property and equipment consisted of the following (in thousands):

D. Other Comprehensive Loss

Other comprehensive (loss) income (“OCL” and “OCI”) consisted of the following during the three and six months ended December 31, 2018 and December 31, 2017 (in thousands):

During the three months ended December 31, 2018, the amounts reclassified from OCI were comprised of $211,000 of gains reclassified to net revenues and $464,000 related to the amortization of forward points reclassified to interest income. During the six months ended December 31, 2018, the amounts reclassified from OCI were comprised of $169,000 of gains reclassified to net revenues and $951,000 related to the amortization of forward points reclassified to interest income.

During the three months ended December 31, 2017, the amounts reclassified from OCI were comprised of $428,000 of losses reclassified to net revenues and $241,000 related to the amortization of forward points reclassified to other income. During the six months ended December 31, 2017, the amounts reclassified from OCI were comprised of $850,000 of losses reclassified to net revenues and $485,000 related to the amortization of forward points reclassified to other income.

E. Debt

On March 20, 2018, we executed an amendment to our credit facility with Wells Fargo Bank, N.A. to extend the maturity for our working line of credit from February 1, 2020, to February 1, 2021. The Credit Agreement provides us with a credit line of up to $10.0 million. The line of credit may be used to finance working capital requirements. There was no commitment fee required as part of this amendment.

Under the terms of the Credit Agreement, borrowings are subject to eligibility requirements including maintaining (i) a ratio of total liabilities to tangible net worth of not greater than 1.25 to 1.0 at any time; and (ii) a ratio of total current assets to total current liabilities of not less than 1.75 to 1.0 at each fiscal quarter end. Any amounts outstanding under the line of credit will bear interest at a fixed or fluctuating interest rate as elected by us from time to time; provided, however, that if the outstanding principal amount is less than $100,000 such amount shall bear interest at the then applicable fluctuating rate of interest. If elected, the fluctuating rate per annum would be equal to 1.25% above the daily one month LIBOR rate as in effect from time to time. If a fixed rate is elected, it would equal a per annum rate of 1.25% above the LIBOR rate in effect on the first day of the applicable fixed rate term. Any amounts outstanding under the line of credit must be paid in full on or before the maturity date. Amounts outstanding that are subject to a fluctuating interest rate may be prepaid at any time without penalty. Amounts outstanding that are subject to a fixed interest rate may be prepaid at any time in minimum amounts of $100,000, subject to a prepayment fee equal to the sum of the discounted monthly differences for each month from the month of prepayment through the month in which the then applicable fixed rate term matures.

Our obligations under the Credit Agreement are secured by our accounts receivable and other rights to payment, general intangibles, inventory, equipment and fixtures. We also have a foreign exchange facility with Wells Fargo Bank, N.A. in effect until January 31, 2021, and with Bank of America, N.A. in effect until August 15, 2019. 

On December 31, 2018, we were in compliance with all of the financial and other covenants required under the Credit Agreement.

We did not use our working capital line of credit nor did we have any long-term debt outstanding during the six months ended December 31, 2018. As of December 31, 2018, we had $10.0 million available under our credit facilities.

F. Economic Dependency

We had substantial net sales to certain customers during the periods shown in the following table. The loss of any of these customers, or a significant decline in (i) sales to these customers, (ii) the growth rate of sales to these customers, or (iii) these customers’ ability to make payments when due, each individually could have a material adverse impact on our net sales and net income. Net sales to any one customer representing 10% or more of the respective period's consolidated net sales were as follows (in thousands):

(a)     Sales were less than 10% of the respective period’s consolidated net sales.

We buy certain products, including beta-alanine, from a limited number of raw material suppliers who meet our quality standards. The loss of any of these suppliers could have a material adverse impact on our net sales and net income. Raw material purchases from any one supplier representing 10% or more of the respective period’s total raw material purchases were as follows (dollars in thousands):

(a)          Purchases were less than 10% of the respective period’s total raw material purchases.

G. Segment Information

Our business consists of two segments for financial reporting purposes. The two segments are identified as (i) private-label contract manufacturing, which primarily relates to the provision of private-label contract manufacturing services to companies that market and distribute nutritional supplements and other health care products, and (ii) patent and trademark licensing, which primarily includes direct raw material sales and royalty income from our license and supply agreements associated with the sale and use of beta-alanine under our CarnoSyn® and SR CarnoSyn® trade names.

We evaluate performance based on a number of factors. The primary performance measures for each segment are net sales and income or loss from operations before the allocation of certain corporate level expenses. Operating income or loss for each segment does not include corporate general and administrative expenses, interest expense and other miscellaneous income and expense items. Corporate general and administrative expenses include, but are not limited to: human resources, corporate legal, finance, information technology, and other corporate level related expenses, which are not allocated to any segment. Transfers of raw materials between segments are recorded at cost. The accounting policies of our segments are the same as those described in the summary of significant accounting policies in Note A above and in the consolidated financial statements included in our 2018 Annual Report.

Our operating results by business segment were as follows (in thousands):

Our private-label contract manufacturing products are sold both in the U.S. and in markets outside the U.S., including Europe, Canada, Australia, New Zealand, and Asia. Our primary markets outside the U.S. are Europe and Asia. Our patent and trademark licensing activities are primarily based in the U.S.

Net sales by geographic region, based on the customers’ location, were as follows (in thousands):

Products manufactured by our Swiss subsidiary ("NAIE") accounted for 90% of net sales in markets outside the U.S. for the three months ended December 31, 2018, and 80% for the six months ended December 31, 2018. Products manufactured by NAIE accounted for 81% of net sales in markets outside the U.S. for the three months ended December 31, 2017, and 79% for the six months ended December 31, 2017. No products manufactured by NAIE were sold in U.S. markets during the three month or six month periods ended December 31, 2018 and 2017.

Assets and capital expenditures by geographic region, based on the location of the company or subsidiary at which they were located or made, were as follows (in thousands):

H. Income Taxes

The effective tax rate for the three months ended December 31, 2018 was 20.7% and the effective tax rate for the six months ended December 31, 2018 was 20.6%. The rates differ slightly from the fiscal 2019 U.S. federal statutory rate of 21% primarily due to the favorable impact of foreign earnings of NAIE, which are taxed at less than the U.S. statutory rate.

The effective tax rate for the three months ended December 31, 2017 was 153.1% and the effective tax rate for the six months ended December 31, 2017 was 97.31%. The effective tax rates for the three and six months ended December 31, 2017 differ from our fiscal 2018 U.S. federal statutory rate of 28.06% primarily due to discrete items related to the Tax Cuts and Jobs Act (“the Tax Act”) enacted in December 2017. Our U.S. federal statutory rate for the year ending June 30, 2018 was 28.06%, which is a blended rate of the historic 35% statutory rate and the 21% rate stipulated by the Act.

To determine our quarterly provision for income taxes, we use an estimated annual effective tax rate, which is based on expected annual income, statutory tax rates and tax planning opportunities available in the various jurisdictions to which we are subject. Certain significant or unusual items are separately recognized in the quarter in which they occur and can be a source of variability in the effective tax rate from quarter to quarter. We recognize interest and penalties related to uncertain tax positions, if any, as an income tax expense. There were no significant discrete items for the three or six months ended December 31, 2018. Included in our tax expenses for the three and six months ended December 31, 2017, is $3.3 million of discrete tax items related to the Tax Act. The discrete items include:

We record valuation allowances to reduce our deferred tax assets to an amount we believe is more likely than not to be realized. In assessing the realizability of deferred tax assets, management considers whether it is more likely than not that some portion or all of the deferred tax assets will be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. During the three or six months ended December 31, 2018, there was no change to our valuation allowance for our deferred tax assets.

Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are measured using enacted tax rates, for each of the jurisdictions in which we operate, expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized as income or expense in the period that includes the enactment date for such new rates.

We are subject to taxation in the U.S., Switzerland and various state jurisdictions. Our tax years for the fiscal year ended June 30, 2015 and forward are subject to examination by the U.S. tax authorities. Our tax years for the fiscal years ended June 30, 2007, 2008, 2009, as well as for the fiscal years ended June 30, 2014 and forward are subject to examination by the state tax authorities. Our tax years for the fiscal year ended June 30, 2015 and forward are subject to examination by the Swiss tax authorities.

It is our policy to establish reserves based on management’s assessment of exposure for certain positions taken in previously filed tax returns that may become payable upon audit by tax authorities. Our tax reserves are analyzed quarterly and adjustments are made as events occur that we believe warrant adjustments to those reserves. There were no adjustments to reserves in the three or six month periods ended December 31, 2018.

I. Treasury Stock

On June 2, 2011, the Board of Directors authorized the repurchase of up to $2.0 million of our common stock. On February 6, 2015, the Board of Directors authorized a $1.0 million increase to our stock repurchase plan bringing the total authorized repurchase amount to $3.0 million. On May 11, 2015, the Board of Directors authorized a $2.0 million increase to our stock repurchase plan bringing the total authorized repurchase amount to $5.0 million. On March 28, 2017, the Board of Directors authorized a $2.0 million increase to our stock repurchase plan bringing the total authorized repurchase amount to $7.0 million. Under the repurchase plan, we may, from time to time, purchase shares of our common stock, depending upon market conditions, in open market or privately negotiated transactions.

During the three and six months ended December 31, 2018 we purchased 36,949 shares under this plan at a weighted average cost of $9.68 and a total cost of $358,000 including commission and fees. During the three and six months ended December 31, 2017, we did not repurchase any shares under this repurchase plan.

During the three months ended December 31, 2018, we acquired 6,864 shares in connection with restricted stock shares that vested during that year at a weighted average cost of $9.66 per share and a total cost of $66,000. During the six months ended December 31, 2018, we acquired 7,538 shares in connection with restricted stock shares that vested during that period at a weighted average cost of $9.66 per share and a total cost of $72,000. During the three months ended December 31, 2017, we acquired 7,264 shares from employees in connection with restricted stock shares that vested during the period at a weighted average cost of $10.80 per share and a total cost of $78,000. During the six months ended December 31, 2017, we acquired 7,998 shares from employees in connection with restricted stock shares that vested during the period at a weighted average cost of $10.79 per share and a total cost of $86,000. These shares were returned to us by the subject employees and in exchange therefor we paid each employee’s required tax withholding liability incurred due to the vesting of their restricted stock shares during that period. The valuation of the shares acquired and therefor the number of shares returned to us was calculated based on the closing share price on the date the shares vested.

J. Derivatives and Hedging

We are exposed to gains and losses resulting from fluctuations in foreign currency exchange rates relating to forecasted product sales denominated in foreign currencies and to other transactions of NAIE, our foreign subsidiary. As part of our overall strategy to manage the level of exposure to the risk of fluctuations in foreign currency exchange rates, we may use foreign exchange contracts in the form of forward contracts. To the extent we enter into such contracts, there can be no guarantee any such contracts will be effective hedges against our foreign currency exchange risk.

As of December 31, 2018, we had forward contracts designated as cash flow hedges primarily to protect against the foreign exchange risks inherent in our forecasted sales of products at prices denominated in currencies other than the U.S. Dollar. These contracts are expected to be settled through August 2020. For derivative instruments that are designated and qualify as cash flow hedges, we record the effective portion of the gain or loss on the derivative in accumulated other comprehensive income (“OCI”) as a separate component of stockholders’ equity and subsequently reclassify these amounts into earnings in the period during which the hedged transaction is recognized in earnings.

For foreign currency contracts designated as cash flow hedges, hedge effectiveness is measured using the spot rate. Changes in the spot-forward differential are excluded from the test of hedge effectiveness and are recorded currently in earnings as interest expense. We measure effectiveness by comparing the cumulative change in the hedge contract with the cumulative change in the hedged item. During the three and six months ended December 31, 2018 and December 31, 2017, we did not have any losses or gains related to the ineffective portion of our hedging instruments. No hedging relationships were terminated as a result of ineffective hedging or forecasted transactions no longer probable of occurring for foreign currency forward contracts. We monitor the probability of forecasted transactions as part of the hedge effectiveness testing on a quarterly basis.

As of December 31, 2018, the notional amounts of our foreign exchange contracts designated as cash flow hedges were approximately $71.0 million (EUR 58.5 million). As of December 31, 2018, a net gain of approximately $1.3 million related to derivative instruments designated as cash flow hedges was recorded in OCI. It is expected that $859,000 will be reclassified into earnings in the next 12 months along with the earnings effects of the related forecasted transactions.

As of December 31, 2018, the fair value of our cash flow hedges was an asset of $2.5 million, of which $1.8 million was classified in prepaids and other current assets, and $682,000 was classified in other non-current assets in our Consolidated Balance Sheets. During the three months ended December 31, 2018, we recognized $1.3 million of net gains in OCI and reclassified $211,000 of gains from OCI to revenue. During the six months ended December 31, 2018, we recognized $1.8 million of net gains in OCI and reclassified $169,000 of gains from OCI to revenue. As of June 30, 2018, $55,000 of the fair value of our cash flow hedges was classified in prepaids and other current assets, $46,000 was classified in other non-current assets, and $101,000 was classified in accrued liabilities in our Consolidated Balance Sheets. During the three months ended December 31, 2017, we recognized $731,000 of net losses in OCI and reclassified $428,000 of losses from OCI to revenue. During the six months ended December 31, 2017, we recognized $2.9 million of net losses in OCI and reclassified $850,000 of losses from OCI to revenue.

K. Contingencies

From time to time, we become involved in various investigations, claims and legal proceedings that arise in the ordinary course of our business. These matters may relate to product liability, employment, intellectual property, tax, regulation, contract or other matters. The resolution of these matters as they arise will be subject to various uncertainties and, even if such claims are without merit, could result in the expenditure of significant financial and managerial resources. While unfavorable outcomes are possible, based on available information, we generally do not believe the resolution of these matters will result in a material adverse effect on our business, consolidated financial condition, or results of operations. However, a settlement payment or unfavorable outcome could adversely impact our results of operations. Our evaluation of the likely impact of these actions could change in the future and we could have unfavorable outcomes we do not expect.