Commitments and Contingencies - Capital Leases (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended	12 Months Ended
	Oct. 01, 2016	Sep. 30, 2016	Sep. 30, 2016	Dec. 31, 2015
Restricted Cash
Cash added to the restricted accounts		$ 0	$ 0	$ 14,200
Letter of credit with Silicon Valley Bank		1,000	1,000
Sale Leaseback Agreements
Restricted Cash
Restricted cash		44,900	44,900
Capital Leases
Total Payments of future minimum lease payments
Remainder of 2016		1,765	1,765
2017		16,313	16,313
2018		10,665	10,665
2019		3,436	3,436
2020		3,436	3,436
Thereafter		5,125	5,125
Total future minimum lease payments		40,740	40,740
Imputed Interest of future minimum lease payments
Remainder of 2016		1,198	1,198
2017		4,201	4,201
2018		2,060	2,060
2019		1,431	1,431
2020		1,080	1,080
Thereafter		819	819
Total future minimum lease payments: Imputed Interest		10,789	10,789
Net Present Value of future minimum lease payments
Remainder of 2016		567	567
2017		12,112	12,112
2018		8,605	8,605
2019		2,005	2,005
2020		2,356	2,356
Thereafter		4,306	4,306
Total future minimum lease payments: Net Present Value		29,951	29,951
Cash received for future services		13,400	13,400	15,100
Subsequent event
Restricted Cash
Cash added to the restricted accounts	$ 12,000
Subsequent event | Sale Leaseback Agreements
Restricted Cash
Cash added to the restricted accounts	$ 12,000
Long-term debt | Capital Leases
Sale Leaseback Transaction [Line Items]
Sale-leaseback liability		30,000	30,000
Finance obligation
Sale Leaseback Transaction [Line Items]
Sale-leaseback liability		$ 2,400	$ 2,400	$ 2,500