New Facility (Details) - USD ($) $ in Thousands					3 Months Ended	6 Months Ended
	Sep. 30, 2016	Sep. 17, 2016	Sep. 15, 2016	Jul. 15, 2016	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016
Operating Leased Assets [Line Items]
Payments to Acquire Property, Plant, and Equipment			$ 42,500			$ 14,672	$ 26,864
Payments to Acquire Buildings, Expected Cost			60,000
Payments made to date						60,800
Purchase option, estimated purchase price			$ 42,000
Long-term Purchase Commitment, additional						6,300
Northlake, Texas | Machinery and Equipment
Operating Leased Assets [Line Items]
Payments to Acquire Property, Plant, and Equipment					$ 33,200
Minimum
Operating Leased Assets [Line Items]
Expected costs for machinery and equipment, furniture and fixtures and related expenditures		$ 35,000
Maximum
Operating Leased Assets [Line Items]
Expected costs for machinery and equipment, furniture and fixtures and related expenditures		39,000
Capital Addition Purchase Commitments [Member]
Operating Leased Assets [Line Items]
Maximum construction costs		$ 22,500
Payments made to date	$ 22,500
Long-term Purchase Commitment, additional						$ 600
Development Management Agreement [Member] | Maximum
Operating Leased Assets [Line Items]
Long-term Purchase Commitment, Amount				$ 4,000