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Share-Based Compensation Plans (Narrative) (Details)		12 Months Ended
Share-Based Compensation Plans (Narrative) (Details)	Dec. 31, 2023 installment	Dec. 31, 2024 USD ($) installment shares	Dec. 31, 2023 USD ($) installment	Dec. 31, 2022 USD ($)	May 18, 2021 shares	Dec. 31, 2007 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation		$ 18,400,000	$ 8,300,000	$ 13,600,000
Deferred income tax benefits for stock options and restricted stock		2,400,000	700,000	1,700,000
Total intrinsic value		$ 7,900,000	$ 5,800,000	8,000,000
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period		10 years
Unrecognized compensation expense		$ 0
Time-Vested Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years	3 years
Award vesting installments \| installment	4		4
Performance-Vested Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years	2 years
Award vesting installments \| installment	1	3	1
Period of earned awards become vested		90 days	90 days
Award performance measurement period			2 years
Relative Total Shareholder Return PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Award vesting installments \| installment		1
Award performance measurement period		3 years
Risk free interest rate		4.33%
Annualized average volatility rate		46.77%
Restricted Stock Units (RSUs) & Performance Stock Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense		$ 16,500,000
Weighted-average period		1 year 9 months 10 days
Total fair value of vested restricted shares		$ 15,500,000	$ 11,600,000	$ 500,000
Minimum \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		1 year
Minimum \| Performance-Vested Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage of target grant amount	0.00%	0.00%	0.00%
Minimum \| Relative Total Shareholder Return PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage of target grant amount		0.00%
Maximum \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		4 years
Maximum \| Time-Vested Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares vesting (as a percent)	100.00%
Maximum \| Performance-Vested Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage of target grant amount	200.00%	225.00%	200.00%
Maximum \| Relative Total Shareholder Return PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage of target grant amount		150.00%
2007 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares) \| shares						17,000,000.0
Two Thousand Twenty-One Equity Incentive Plan Member
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares) \| shares					23,100,000
Number of shares reserved for issuance (in shares) \| shares					22,800,000
Number of shares available for grant (in shares) \| shares		19,400,000