Note 1 - Warranty Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Balance at beginning of the period	$ 3,408	$ 2,662
Additions charged to expense	5,069	3,185
Deductions for repairs and replacements	(3,408)	(2,439)
Balance at end of the period	$ 5,069	$ 3,408