Property, Plant and Equipment, net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Jun. 30, 2020
Property, Plant and Equipment, net
Less: accumulated depreciation	$ (114,359)		$ (114,359)		$ (102,983)
Property, plant and equipment, net before construction in progress	162,118		162,118		166,905
Property, plant and equipment, net	173,157		173,157		179,518
Depreciation expense	5,700	$ 5,900	11,500	$ 11,700
Held in foreign countries
Property, Plant and Equipment, net
Property, plant and equipment, net	600		600		600
Land
Property, Plant and Equipment, net
Property, plant and equipment, gross	1,783		1,783		1,783
Building and improvements
Property, Plant and Equipment, net
Property, plant and equipment, gross	103,256		103,256		100,285
Machinery and equipment
Property, Plant and Equipment, net
Property, plant and equipment, gross	168,036		168,036		164,704
Furniture and fixtures
Property, Plant and Equipment, net
Property, plant and equipment, gross	3,402		3,402		3,116
Construction in progress
Property, Plant and Equipment, net
Property, plant and equipment, net	$ 11,039		$ 11,039		$ 12,613