Property, Plant and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017
Property, Plant and Equipment
Less: accumulated depreciation	$ (85,565)		$ (85,565)		$ (71,461)
Property, plant and equipment, net before construction in progress	180,052		180,052		188,499
Property, plant and equipment, net	267,398		267,398		243,148
Depreciation expense	5,000	$ 5,500	16,100	$ 16,100
Held in foreign countries
Property, Plant and Equipment
Property, plant and equipment, net	1,100		1,100		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	108,035		108,035		108,730
Machinery and equipment
Property, Plant and Equipment
Property, plant and equipment, gross	147,561		147,561		142,086
Furniture and fixtures
Property, Plant and Equipment
Property, plant and equipment, gross	3,830		3,830		2,953
Construction in progress
Property, Plant and Equipment
Property, plant and equipment, net	$ 87,346		$ 87,346		$ 54,649