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Commitments and Other Contingencies - Restructuring Activities (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2016
USD ($)
Restructuring Cost and Reserve [Line Items]  
Beginning balance $ (1,049)
Additions (2,904)
Payments 3,953
Ending balance 0
Special Termination Benefits  
Restructuring Cost and Reserve [Line Items]  
Beginning balance (1,049)
Additions (2,072)
Payments 3,121
Ending balance 0
Facility Closing  
Restructuring Cost and Reserve [Line Items]  
Beginning balance 0
Additions (832)
Payments 832
Ending balance $ 0