Debt - Summary of Amounts Outstanding under the Credit Facility (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Line of Credit Facility [Line Items]
Debt Issuance Costs, Line of Credit Arrangements, Net	$ 7,075	$ 3,071
Credit Facility | Revolving Credit Facility
Line of Credit Facility [Line Items]
Interest rate	1.20%
Long-term debt, net		200,000
Letters of Credit Outstanding, Amount	$ 1,500	$ 1,500
Line of Credit Facility, Commitment Fee Percentage	0.15%	0.15%
Credit Facility | Revolving Credit Facility | Other Assets Net
Line of Credit Facility [Line Items]
Debt Issuance Costs, Line of Credit Arrangements, Net	$ 7,100	$ 3,100
Credit Facility | Tranche A-1 Term Loan
Line of Credit Facility [Line Items]
Interest rate	2.59%
Debt, gross	$ 200,000	100,000
Credit Facility | Tranche A-1 Term Loan | Interest rate swap
Line of Credit Facility [Line Items]
Derivative, Notional Amount	$ 200,000	100,000
Weighted average interest rate	1.39%
Credit Facility | Tranche A-2 Term Loan
Line of Credit Facility [Line Items]
Interest rate	2.49%
Debt, gross	$ 200,000	200,000
Credit Facility | Tranche A-2 Term Loan | Interest rate swap
Line of Credit Facility [Line Items]
Derivative, Notional Amount	$ 200,000	137,600
Weighted average interest rate	1.34%
Credit Facility | Tranche A-1 and A-2 Loans
Line of Credit Facility [Line Items]
Debt, gross	$ 400,000	300,000
Unamortized deferred financing costs, net	(2,192)	(2,705)
Long-term debt, net	$ 397,808	$ 297,295