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