Debt and Other Obligations (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Debt and Other Obligations
Total debt before unamortized discount and debt issuance costs	$ 507,201		$ 520,080
Unamortized discount and debt issuance costs, net	(8,328)		(9,407)
Total debt	498,873		510,673
Total current portion of long-term debt	8,752	$ 7,964	8,583
Long-term debt	490,121	$ 489,597	502,090
Term Loan B
Debt and Other Obligations
Total debt before unamortized discount and debt issuance costs	496,163		501,213
Total current portion of long-term debt	5,050		5,050
Seller Notes
Debt and Other Obligations
Total debt before unamortized discount and debt issuance costs	9,005		4,506
Total current portion of long-term debt	3,175		2,513
Finance lease liabilities and other
Debt and Other Obligations
Total debt before unamortized discount and debt issuance costs	2,033		14,361
Total current portion of long-term debt	$ 527		$ 1,020