Long-term Debt - Credit Agreement (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Debt financing and related expenses			$ 10,520	$ 0
Net leverage ratio	3.00		3.00
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Payments of Financing Costs		$ 1,100
Write off of Deferred Debt Issuance Cost		$ 200
Line of Credit Facility, Maximum Borrowing Capacity	$ 300,000		$ 300,000
Debt Instrument, Maturity Date	Mar. 29, 2026
Debt Instrument, Basis Spread on Variable Rate	1.50%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving Credit Facility, Capacity Available for Foreign Revolver Loans	$ 125,000		125,000
Line of Credit Facility, Maximum Borrowing Capacity	300,000		300,000
Revolving Credit Facility, Amount Outstanding	0		0		$ 50,500
Revolving Credit Facility, Remaining Borrowing Capacity	300,000		300,000		$ 249,500
Letters of credit [Member]
Debt Instrument [Line Items]
Letters of Credit, Maximum Borrowing Capacity	40,000		40,000
Letters of Credit Outstanding, Amount	0		0
Revolving credit and term loan facilities [Member]
Debt Instrument [Line Items]
Incremental debt commitments capacity	$ 200,000		$ 200,000