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Note 3 - Fair Value Measurements | 6 Months Ended
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Sep. 30, 2019
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 short and long-term debt. We measure our cash equivalents at fair value, and classify them within Level 1 of the fair value hierarchy and we value them using quoted market prices in an active market. As of September 30, 2019 and March 31, 2019 , cash and cash equivalents on our Condensed Consolidated Balance Sheets included $235,989 and $0, respectively, in a money market account. Due to their short-term nature, the carrying values of trade accounts receivable and trade accounts payable approximate fair value. Historically, we have had debt balances for our term loan and revolver; however, the balances associated with those instruments were paid off during the three months ended September 30, 2019. Debt balances as of March 31, 2019 had a variable interest rate, so the carrying amount approximated fair value because interest rates on these instruments approximated the interest rate of debt with similar terms available to us. During the three months ended September 30, 2019, we issued $172,500 aggregate principal amount of convertible senior notes due August 15, 2025 ( the "Notes"). We estimate the fair value of the Notes based on the last actively traded price or market observable input before the end of the reporting period. The estimated fair value and carrying value of the Notes were as follows:
|  | September 30, 2019 |  |  | March 31, 2019 |
|  | Carrying Value |  |  | Fair Value (Level 2) |  |  | Carrying Value |  |  | Fair Value |
Notes |  | $ | 137,682 |  |  | $ | 184,575 |  |  | $ | -- |  |  | $ | -- |
The Notes are discussed in more detail in Note 6. "Indebtedness." 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. Except as stated below in "Acquisitions," we had no non-financial assets or liabilities that were measured using Level 3 inputs during the six months ended September 30, 2019 . There were no transfers between the levels of the fair value hierarchy during the three and six months ended September 30, 2019 and three and six months ended September 30, 2018 respectively. Cash and cash equivalents and accounts receivables are the financial instruments that subject us to the highest concentration of credit risk. It is our policy to invest cash equivalents in highly liquid financial instruments with high credit ratings, and low exposure to a single issuer (except U.S. treasuries). Concentration of credit risk with respect to accounts receivable is limited to customers to which we make significant sales. We reserve an allowance for potential write-offs of accounts receivable, but we have not written off any significant accounts to date. To control credit risk, we perform regular credit evaluations of our customers’ financial condition.

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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=117815213&loc=d3e19207-110258 + Details
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