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Note 1 - Summary of Accounting Policies - Changes in Warranty Reserve (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Balance at beginning of year $ 1,911 $ 1,849 $ 1,580
Acquisitions and other charges (86) (85) (138)
Warranty expense 1,783 2,346 1,826
Warranty claims (1,827) (2,199) (1,419)
Balance at end of year $ 1,781 $ 1,911 $ 1,849