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Note 1 - Summary of Accounting Policies - Changes in Warranty Reserve (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2019
Balance at beginning of year $ 1,781 $ 1,911 $ 1,849
Acquisitions and other charges 68 (86) (85)
Warranty expense 2,007 1,783 2,346
Warranty claims (1,770) (1,827) (2,199)
Balance at end of year $ 2,086 $ 1,781 $ 1,911