New Facility (Details) - USD ($) $ in Thousands			12 Months Ended
	Sep. 15, 2016	Jul. 15, 2016	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Operating Leased Assets [Line Items]
Purchases of property, plant and equipment	$ 42,500		$ 35,443	$ 45,195	$ 31,050
Payments made to date			10,700
Long-term Purchase Commitment, additional			19,300
Northlake, Texas | Machinery and Equipment
Operating Leased Assets [Line Items]
Purchases of property, plant and equipment			33,200
Maximum | Northlake, Texas
Operating Leased Assets [Line Items]
Expected construction costs			60,000
Payments made to date			60,800
Expected costs for machinery and equipment, furniture and fixtures and related expenditures			39,000
Minimum | Northlake, Texas
Operating Leased Assets [Line Items]
Expected costs for machinery and equipment, furniture and fixtures and related expenditures			35,000
Development Management Agreement [Member] | Maximum
Operating Leased Assets [Line Items]
Maximum construction costs		$ 4,000
Amended Building Contract [Member]
Operating Leased Assets [Line Items]
Payments made to date			$ 22,500