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Note 11 - Accounts Payable and Accrued Expenses - Product Warranty Activity (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Balance at beginning of period $ 2,187 $ 2,168 $ 2,053 $ 2,015
Acquired warranty obligations 0 0 248 0
Change in accruals for warranties during the period 206 148 314 384
Settlements during the period (238) (207) (460) (290)
Balance at end of period $ 2,155 $ 2,109 $ 2,155 $ 2,109