Long-Term Debt - Schedule of Notes Payable (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt	$ 443,201	$ 524,456
2018 Revolving Credit Facility
Debt Instrument [Line Items]
Long-term debt, gross	9,500	89,000
Unamortized deferred financing and issuance costs - term loan	(2,907)	(3,677)
2018 Term Loan Facility
Debt Instrument [Line Items]
Long-term debt, gross	442,125	445,500
Unamortized deferred financing and issuance costs - term loan	$ (5,517)	$ (6,367)