Note 8 - Property, Plant and Equipment (Details) - Property, Plant and Equipment (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Property, Plant and Equipment [Line Items]
Cost	$ 191,748	$ 176,509
Accumulated Depreciation	(140,211)	(125,309)
Net	51,537	51,200
Land [Member]
Property, Plant and Equipment [Line Items]
Cost	1,376	1,377
Net	1,376	1,377
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Cost	47,793	46,101
Accumulated Depreciation	(25,994)	(23,308)
Net	21,799	22,793
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Cost	142,579	129,031
Accumulated Depreciation	(114,217)	(102,001)
Net	$ 28,362	$ 27,030