Property, Plant and Equipment (Details) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013	Jun. 30, 2013
Property, Plant and Equipment
Property, plant and equipment, at cost	$ 91,314,000		$ 91,314,000		$ 71,144,000
Less accumulated depreciation	(34,309,000)		(34,309,000)		(31,003,000)
Property, plant and equipment, net	57,005,000		57,005,000		40,141,000
Impairment charges	0	0	0	0
Property, plant and equipment, net, held in foreign countries	1,200,000		1,200,000		1,300,000
Land
Property, Plant and Equipment
Property, plant and equipment, at cost	4,641,000		4,641,000		1,350,000
Building and improvements
Property, Plant and Equipment
Property, plant and equipment, at cost	39,684,000		39,684,000		32,992,000
Building and improvements | Minimum
Property, Plant and Equipment
Useful Lives			10 years
Building and improvements | Maximum
Property, Plant and Equipment
Useful Lives			39 years
Machinery and equipment
Property, Plant and Equipment
Property, plant and equipment, at cost	35,660,000		35,660,000		32,620,000
Machinery and equipment | Minimum
Property, Plant and Equipment
Useful Lives			5 years
Machinery and equipment | Maximum
Property, Plant and Equipment
Useful Lives			10 years
Furniture and fixtures
Property, Plant and Equipment
Property, plant and equipment, at cost	1,392,000		1,392,000		1,290,000
Furniture and fixtures | Minimum
Property, Plant and Equipment
Useful Lives			5 years
Furniture and fixtures | Maximum
Property, Plant and Equipment
Useful Lives			7 years
Construction in progress
Property, Plant and Equipment
Property, plant and equipment, at cost	$ 9,937,000		$ 9,937,000		$ 2,892,000