Note 15 - Segment and Related Information (Details) - Net sales by geographic region (USD $) In Thousands, unless otherwise specified	3 Months Ended										12 Months Ended
	Jun. 30, 2013	Mar. 31, 2013		Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012		Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Note 15 - Segment and Related Information (Details) - Net sales by geographic region [Line Items]
Net sales	$ 42,336	$ 38,974	[1]	$ 38,002	$ 39,062	$ 38,172	$ 34,717	[1]	$ 35,737	$ 38,720	$ 158,374	$ 147,346	$ 179,170
United States [Member]
Note 15 - Segment and Related Information (Details) - Net sales by geographic region [Line Items]
Net sales											106,789	97,369	119,336
Asia Pacific [Member]
Note 15 - Segment and Related Information (Details) - Net sales by geographic region [Line Items]
Net sales											36,432	35,347	46,067
Europe [Member]
Note 15 - Segment and Related Information (Details) - Net sales by geographic region [Line Items]
Net sales											15,104	14,482	13,438
Other Geographic Region [Member]
Note 15 - Segment and Related Information (Details) - Net sales by geographic region [Line Items]
Net sales											$ 49	$ 148	$ 329

[1] The effects of the tax benefit in the third quarter of fiscal 2012 resulting from a higher than anticipated Federal Research and Experimentation credit amounted to $0.6 million or $0.04 per diluted share in the third quarter.