Stock-Based Compensation, Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Number of Shares [Roll Forward]
Exercised (in shares)	(500,000)	(1,200,000)	(700,000)
Stock Options [Member]
Number of Shares [Roll Forward]
Outstanding at beginning of year (in shares)	1,625,500
Granted (in shares)	0
Exercised (in shares)	(263,500)
Forfeited/cancelled/expired (in shares)	(454,400)
Outstanding at end of year (in shares)	907,600	1,625,500
Exercisable at end of year (in shares)	784,000
Weighted-Average Exercise Price [Roll Forward]
Outstanding at beginning of year (in dollars per share)	$ 40.04
Granted (in dollars per share)	0
Exercised (in dollars per share)	31.73
Forfeited/cancelled/expired (in dollars per share)	45.63
Outstanding at end of year (in dollars per share)	39.67	$ 40.04
Exercisable at end of year (in dollars per share)	$ 38.12
Remaining Contractual Term and Aggregate Intrinsic Value [Abstract]
Outstanding options, weighted-average remaining contractual term	3 years 10 days
Outstanding options, aggregate intrinsic value	$ 0
Exercisable options, weighted-average remaining contractual term	2 years 10 months 2 days
Exercisable options, aggregate intrinsic value	$ 0
Service-Based Options [Member]
Number of Shares [Roll Forward]
Outstanding at beginning of year (in shares)	163,900
Granted (in shares)	0
Exercised (in shares)	(78,900)
Forfeited/cancelled/expired (in shares)	(85,000)
Outstanding at end of year (in shares)	0	163,900
Exercisable at end of year (in shares)	0
Weighted-Average Exercise Price [Roll Forward]
Outstanding at beginning of year (in dollars per share)	$ 37.69
Granted (in dollars per share)	0
Exercised (in dollars per share)	34.6
Forfeited/cancelled/expired (in dollars per share)	40.78
Outstanding at end of year (in dollars per share)	0	$ 37.69
Exercisable at end of year (in dollars per share)	$ 0
Remaining Contractual Term and Aggregate Intrinsic Value [Abstract]
Outstanding options, aggregate intrinsic value	$ 0
Exercisable options, aggregate intrinsic value	$ 0
Performance-Based Options [Member]
Number of Shares [Roll Forward]
Outstanding at beginning of year (in shares)	1,461,600
Granted (in shares)	0
Exercised (in shares)	(184,600)
Forfeited/cancelled/expired (in shares)	(369,400)
Outstanding at end of year (in shares)	907,600	1,461,600
Exercisable at end of year (in shares)	784,000
Weighted-Average Exercise Price [Roll Forward]
Outstanding at beginning of year (in dollars per share)	$ 40.3
Granted (in dollars per share)	0
Exercised (in dollars per share)	30.5
Forfeited/cancelled/expired (in dollars per share)	46.75
Outstanding at end of year (in dollars per share)	39.67	$ 40.3
Exercisable at end of year (in dollars per share)	$ 38.12
Remaining Contractual Term and Aggregate Intrinsic Value [Abstract]
Outstanding options, weighted-average remaining contractual term	3 years 10 days
Outstanding options, aggregate intrinsic value	$ 0
Exercisable options, weighted-average remaining contractual term	2 years 10 months 2 days
Exercisable options, aggregate intrinsic value	$ 0