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Note 3 - Fair Value Measurements | 12 Months Ended
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Mar. 31, 2023
Notes to Financial Statements |
Fair Value Disclosures [Text Block] | Note 3. Fair Value Measurements Our financial instruments generally consist of cash and cash equivalents, trade accounts receivable, obligations under trade accounts payable, and debt. Due to their short-term nature, the carrying values of cash and cash equivalents, trade accounts receivable, and trade accounts payable approximate fair value. The financial instruments that subject us to the highest concentration of credit risk are cash and accounts receivable. We maintain relationships and cash deposits at multiple banking institutions across the world in an effort to diversify and reduce risk of loss. Concentration of credit risk with respect to accounts receivable is limited to customers to whom we make significant sales. Unusually, one of our distributors accounted for approximately 18% of total trade receivables as of March 31, 2023. Some of this balance was attributable to orders placed in the last months of fiscal year 2023, but a substantial portion was aged from earlier months; we have since collected payments for all aged balances and have continued to collect currently due amounts. To manage credit risk, we consider the creditworthiness of new and existing customers, establish credit limits, and regularly review outstanding balances and payment histories. We may require pre-payments from customers under certain circumstances and may limit future purchases until payments are made on past due amounts. We have outstanding $172,500 aggregate principal of 1.375% convertible senior notes due August 15, 2025, which we refer to as our 2025 Notes. We estimate the fair value of the 2025 Notes based on the last actively traded price or observable market input preceding the end of the reporting period. The estimated fair value and carrying value of the 2025 Notes were as follows:
|  | March 31, 2023 |  |  | March 31, 2022 |
|  | Carrying Value |  |  | Fair Value (Level 2) |  |  | Carrying Value |  |  | Fair Value (Level 2) |
2025 Notes |  | $ | 170,272 |  |  | $ | 161,072 |  |  | $ | 169,365 |  |  | $ | 185,438 |
There were no transfers between the levels of the fair value hierarchy during the fiscal years ended March 31, 2023 and 2022. Our financial liabilities based upon Level 3 inputs include a contingent consideration arrangement relating to our acquisition of substantially all the assets and certain liabilities of Belyntic GmbH’s peptide purification business (the "Belyntic acquisition," see Note 4. "Significant Transactions"). We are obligated to pay contingent consideration of $1,500 cash upon approval of pending patent applications, expected within 36 months of the acquisition date. The fair value of the contingent consideration was $1,190 as of March 31, 2023, and was recorded in other long-term liabilities on the accompanying Consolidated Balance Sheets. We estimated the fair value of the contingent consideration at inception using a probability-weighted outcome analysis based on our expectations of patent approval, leveraging our historical experience and expert input. The amount ultimately paid for the contingency could range from $0 to $1,500.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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