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Note 3 - Fair Value Measurements | 12 Months Ended
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Mar. 31, 2021
Notes to Financial Statements |
Fair Value Disclosures [Text Block] | Note 3. Fair Value Measurements Our financial instruments consist primarily 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. As of March 31, 2021 and March 31, 2020, respectively, cash and cash equivalents on our Consolidated Balance Sheets included $230,822 and $66,735 held in a money market account. We classify cash equivalents within Level 1 of the fair value hierarchy, and we value them using quoted market prices in active markets. The financial instruments that subject us to the highest concentration of credit risk are cash and cash equivalents and accounts receivable. It is our policy to invest in highly liquid cash equivalent financial instruments with high credit ratings and to maintain low single issuer exposure (except U.S. treasuries). Concentration of credit risk with respect to accounts receivable is limited to customers to which we make significant sales. To manage credit risk, we consider the creditworthiness of new and existing customers, and we 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 reserve an allowance for potential write-offs of accounts receivable, but we have not written off any significant accounts to date. We have outstanding $172,500 aggregate principal of 1.375% convertible senior notes due August 15, 2025. We estimate the fair value of the 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 Notes were as follows:
|  | March 31, 2021 |  |  | March 31, 2020 |
|  | Carrying Value |  |  | Fair Value (Level 2) |  |  | Carrying Value |  |  | Fair Value (Level 2) |
Notes |  | $ | 145,675 |  |  | $ | 188,780 |  |  | $ | 140,278 |  |  | $ | 173,363 |
During the year ended March 31, 2021, we entered into a revolving credit facility which has a variable interest rate; there is no balance outstanding on the credit facility as of March 31, 2021. See Note 10. "Indebtedness" for further discussion on the Notes and the revolving credit facility. Assets recognized or disclosed at fair value on the Consolidated Financial Statements on a nonrecurring basis include items such as property and equipment, operating lease assets, goodwill, and other intangible assets. These assets are measured at fair value if determined to be impaired. Fair values assigned to the assets and liabilities acquired in the GPT Acquisition were measured using Level 3 inputs, as discussed in Note 4. "Significant Transactions." There were no transfers between fair value hierarchy levels during the years ended March 31, 2021 and March 31, 2020.

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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