Note 1 - Summary of Significant Accounting Policies (Details) - Warranty Liabilities - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Warranty Liabilities [Abstract]
Balance at beginning of the period	$ 2,662	$ 1,424
Additions charged to expense	3,185	3,816
Deductions for repairs and replacements	(2,439)	(2,578)
Balance at end of the period	$ 3,408	$ 2,662