Note 10 - Equity-Based Compensation (Details) - Total equity-based compensation expense recognized (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of equity based compensation	$ 3,784	$ 3,853	$ 4,097
Amount of related income tax benefit recognized in income	1,362	1,387	1,475
Employee Stock Option [Member] | Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of equity based compensation			130
Employee Stock Option [Member] | Marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of equity based compensation			40
Employee Stock Option [Member] | Research and Development Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of equity based compensation			95
Employee Stock Option [Member] | General and Administrative Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of equity based compensation			172
Employee Stock Option [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of equity based compensation			437
Amount of related income tax benefit recognized in income			157
Restricted Stock [Member] | Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of equity based compensation	886	814	611
Restricted Stock [Member] | Marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of equity based compensation	249	245	172
Restricted Stock [Member] | Research and Development Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of equity based compensation	392	409	448
Restricted Stock [Member] | General and Administrative Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of equity based compensation	2,257	2,385	2,429
Restricted Stock [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of equity based compensation	3,784	3,853	3,660
Amount of related income tax benefit recognized in income	1,362	1,387	1,318
Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of equity based compensation	886	814	741
Marketing [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of equity based compensation	249	245	212
Research and Development Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of equity based compensation	392	409	543
General and Administrative Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Cost of equity based compensation	$ 2,257	$ 2,385	$ 2,601