Statement of Cash Flows (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accrued capital expenditures	$ 28,200,000	$ 50,700,000	$ 56,200,000
Capital Lease Obligations, Current	127,274,000	0
Facilities Building D and E
Facility lease obligations recognized	16,800,000	26,000,000	127,800,000
Warrant
Liabilities, Fair Value Adjustment	0	$ 0	$ 87,500,000
Tarrytown, New York
Capital Lease Obligations, Current	$ 138,100,000