Debt and Other Obligations (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Debt and Other Obligations
Total debt before unamortized discount and debt issuance costs	$ 529,189	$ 507,201
Unamortized discount and debt issuance costs, net	(7,798)	(8,328)
Total debt	521,391	498,873
Total current portion of long-term debt	27,791	8,752
Long-term debt	493,600	490,121
Term Loan B
Debt and Other Obligations
Total debt before unamortized discount and debt issuance costs	492,375	496,163
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	29,208	9,005
Total current portion of long-term debt	21,893	3,175
Deferred payment obligation
Debt and Other Obligations
Total debt before unamortized discount and debt issuance costs	4,000
Finance lease liabilities and other
Debt and Other Obligations
Total debt before unamortized discount and debt issuance costs	3,606	2,033
Total current portion of long-term debt	$ 848	$ 527