Commitments and Contingencies (Minimum Rentals) (Details) $ in Thousands	Dec. 31, 2016 USD ($)
Long-term Debt, Fiscal Year Maturity [Abstract]
Long-term debt maturities, 2017	$ 12,500
Long-term debt maturities, 2018	12,500
Long-term debt maturities, 2019	12,500
Long-term debt maturities, 2020	12,500
Long-term debt maturities, 2021	222,779
Long-term debt maturities, Thereafter	0
Total Debt	272,779
Less: current portion	(12,500)
Long-term obligations, Debt	260,279
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Capital Leases, future minimum payments due, 2017	12
Capital Leases, future minimum payments due, 2018	12
Capital Leases, future minimum payments due, 2019	12
Capital Leases, future minimum payments due, 2020	5
Capital Leases, future minimum payments due, 2021	0
Capital Leases, future minimum payments due, Thereafter	0
Total capital lease obligations	41
Less: amount representing interest	(6)
Present value of obligations under capital leases	35
Less: current portion	(9)
Long-term obligations, Capital Leases	26
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
Operating Leases, future minimum payments due, 2017	4,627
Operating Leases, future minimum payments due, 2018	4,226
Operating Leases, future minimum payments due, 2019	2,353
Operating Leases, future minimum payments due, 2020	1,197
Operating Leases, future minimum payments due, 2021	104
Operating Leases, future minimum payments due, Thereafter	53
Total operating lease obligations	12,560
Less: sublease income	(3,110)
Net lease payments	9,450
Purchase Obligation, Fiscal Year Maturity [Abstract]
Purchase Obligation,future minimum payments due, 2017	541
Purchase Obligation,future minimum payments due, 2018	541
Purchase Obligation, future minimum payments due, 2019	406
Purchase Obligation, future minimum payments due, 2020	0
Purchase Obligation, future minimum payments due, 2021	0
Purchase Obligation, future minimum payments due, Thereafter	0
Total Purchase Obligation	$ 1,488