Note 6 - Accrued Expenses (Details) - Accrued Expenses - USD ($) $ in Thousands	Sep. 30, 2015	Jun. 30, 2015	Sep. 30, 2014	Jun. 30, 2014
Accrued Expenses:
Compensation and benefits	$ 8,174	$ 11,614
Customer prepayments	1,755	1,324
Accrued sales commissions	1,961	1,982
Accrued warranty	3,670	3,408	$ 2,991	$ 2,662
Accrued income taxes	2,245
Other accrued expenses	3,933	3,798
Total Accrued Expenses	$ 21,738	$ 22,126