Property, Plant and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Jun. 30, 2016
Property, Plant and Equipment
Less accumulated depreciation	$ (64,049)		$ (64,049)		$ (53,598)
Property, plant and equipment, net before construction in progress	184,691		184,691		179,265
Property, plant and equipment, net	227,053		227,053		216,638
Asset Impairment Charges	0	$ 0	0	$ 0
Property, plant and equipment, net, held in foreign countries	924		924		1,000
Land
Property, Plant and Equipment
Property, plant and equipment, gross	6,191		6,191		6,191
Building and improvements
Property, Plant and Equipment
Property, plant and equipment, gross	105,637		$ 105,637		103,496
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, gross	134,239		$ 134,239		120,272
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, gross	2,673		$ 2,673		2,904
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, net	$ 42,362		$ 42,362		$ 37,373