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Debt (Summary of Debt) (Details) - USD ($) $ in Thousands	6 Months Ended
Debt (Summary of Debt) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021	Dec. 21, 2016
Debt [Line Items]
Short-term debt	$ 8,637	$ 6,147
Total long-term debt	644,372	1,737,438
Total debt	653,009	1,743,585
Current portion	4,617	3,498
Non-current portion	639,755	1,733,940
Delayed Draw Term Loans [Member]
Debt [Line Items]
Less: unamortized debt issue costs	(410)	(463)
2.30% Term Loan, Due September 2026 [Member] \| Delayed Draw Term Loans [Member]
Debt [Line Items]
Long-term Debt	$ 92,348	93,283
Weighted average interest rate	3.08%
Long-term revolver loan, 2.29% Maturing September 2026 [Member] \| Revolver Loan [Member]
Debt [Line Items]
Long-term Debt		46,206
Weighted average interest rate	2.29%
Long-term revolver loan, 2.29% Maturing September 2026 [Member] \| Revolver Loan [Member]
Debt [Line Items]
Long-term Debt		56,492
Weighted average interest rate	2.29%
Long-term revolver loan, 1.89% Maturing September 2026 [Member] \| Revolver Loan [Member]
Debt [Line Items]
Long-term Debt	$ 57,000	117,000
Weighted average interest rate	2.53%
5.375% Senior Unsecured Note, Due January 2025 [Member] \| Senior Unsecured Notes [Member]
Debt [Line Items]
Long-term Debt	$ 500,000	500,000
Less: unamortized debt issue costs	$ (4,566)	(5,469)
Interest rate	5.375%		5.375%
Maturity date	Jan. 15, 2025
4.75% Senior Unsecured Note, Due December 2031 (2021 USD Notes) \| Senior Unsecured Notes [Member]
Debt [Line Items]
Long-term Debt		600,000
Less: unamortized debt issue costs		(1,948)
Weighted average interest rate	4.75%
4.95% Senior Unsecured Note, Due December 2029 (2021 CAD Notes) \| Senior Unsecured Notes [Member]
Debt [Line Items]
Long-term Debt		333,464
Less: unamortized debt issue costs		$ (1,127)
Weighted average interest rate	4.95%