Debt - Prior Senior Credit Facility (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended	12 Months Ended
	Oct. 30, 2018	Dec. 31, 2019	Sep. 30, 2019	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Line of Credit Facility [Line Items]
Loss on derivative liability					$ 0	$ 1,284	$ 0
Interest rate swap agreement | Cash Flow Hedging
Line of Credit Facility [Line Items]
Loss on derivative liability			$ 1,300
Payment for derivative termination			$ 1,300
Amended And Restated Credit Agreement
Line of Credit Facility [Line Items]
Payments of debt restructuring costs	$ 300			$ 700
Write off of debt issuance costs		$ 1,400				500	0
Amended And Restated Credit Agreement | Term Loan, net
Line of Credit Facility [Line Items]
Payment for debt prepayment						$ 12,500	$ 10,000