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Note 1 - Summary of Accounting Policies - Changes in Warranty Reserve (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Balance at beginning of year $ 9,243 $ 9,085 $ 7,436
Acquisitions and other charges (138) 301 (5)
Warranty expense 9,223 9,203 13,503
Warranty claims (8,972) (9,346) (11,849)
Balance at end of year $ 9,356 $ 9,243 $ 9,085