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Stock Compensation Plans and Other Employee Benefit Plans - Narrative (Details) - USD ($)	12 Months Ended					120 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2025	Dec. 31, 2022	May 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares approved for issuance (in shares)								1,825,000
Shares available for future grants (in shares)	2,185,493,000,000					2,185,493,000,000
Number of stock options granted (in shares)						0
Stock-based compensation expense	$ 42,000,000.0	$ 38,900,000	$ 33,500,000
Tax benefit (expense) from stock-based compensation arrangements	9,100,000	8,300,000	7,400,000
Aggregate intrinsic value of options exercised	466,598	179,664	2,500,000
Actual tax benefit realized from option exercises	90,000	30,000	540,000
Excess tax benefits from stock-based compensation arrangements	220,000	86,457	2,200,000
Excess (deficit) tax benefit over estimate	3,600,000	4,400,000	1,800,000
Unrecognized compensation cost	$ 47,700,000					$ 47,700,000
Unrecognized compensation cost, period for recognition (in years)	2 years
Fair value of shares vested	$ 43,700,000	34,700,000	22,100,000
Expense for employer contribution to plan	22,000,000.0	19,700,000	19,200,000
Cash Incentive and Retention Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense related to plan	0	0	0
Cash awards paid	0	$ 0	$ 0
Cash awards outstanding	$ 0					$ 0
Directors Deferred Fee and Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in shares authorized (in shares)					200,000
Issued to directors (in shares)	17,546	14,927	63,001
Obligation to issue (in shares)	313,281					313,281
Available for future issuance under DDFS Plan (in shares)	24,218					24,218
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term (in years)	10 years
Stock Options | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	3 years
Stock Options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	5 years
Restricted Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding (in shares)	888,398	880,866	746,123			888,398	610,155
Restricted Shares | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	1 year
Restricted Shares | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	5 years
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)	3 years
Performance period (in years)	3 years
Shares outstanding (in shares)	377,757	454,017	553,026			377,757	545,379
Performance Shares | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding (in shares)	560,000					560,000
LTIP Awards | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of performance based award payouts (as a percent)	0.00%
LTIP Awards | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of performance based award payouts (as a percent)	150.00%
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of purchase price of shares	95.00%
Employee stock purchase plan issuance (in shares)	29,708	32,942	46,034
Compensation expense employee stock purchase plan	$ 0	$ 0	$ 0
Increase in shares authorized (in shares)				200,000
Common stock obligation to issue (in shares)	6,038					6,038
Available for future grants under ESPP (in shares)	103,788					103,788

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