Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($)	Total	Voting Common Stock	Non-Voting Common Stock Equivalents	Share Repurchase Program 03/23/2026	Private Capital	Preferred Stock	Non-Voting Common Stock Equivalents	Non-Voting Common Stock Equivalents Common Stock	Class B Nonvoting	Class B Nonvoting Common Stock	Voting Common Stock	Voting Common Stock Common Stock	Voting Common Stock Restricted Stock-Based Compensation Common Stock	Voting Common Stock Restricted Stock-Based Compensation Surrendered Common Stock	Nonvoting Common Stock Equivalents	Nonvoting Common Stock Equivalents Common Stock	Common Stock, Voting Share Repurchase Program 03/23/2026	Preferred Stock	Common Stock	Common Stock Class B Nonvoting	Common Stock Voting Common Stock	Class B Nonvoting Non-Voting Common Stock Equivalents	Additional Paid-in Capital	Additional Paid-in Capital Share Repurchase Program 03/23/2026	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Stockholders' Equity Disclosure [Rollforward]
Preferred stock outstanding (shares)						513,250
Common stock, outstanding (in shares)										477,321		158,557,735
Common stock, issued (in shares)																(9,790,600)
Preferred stock dividends declared per share (usd per share)	$ 0.4845
Common stock dividends declared per share (usd per share)	$ 0.10
Beginning Period Balance at Dec. 31, 2024	$ 3,499,949,000																	$ 498,516,000	$ 1,586,000	$ 5,000		$ 98,000	$ 3,785,725,000		$ (431,201,000)	$ (354,780,000)
Stockholders' Equity Disclosure [Rollforward]
Net earnings	53,568,000																								53,568,000
Other comprehensive income, net of tax	31,460,000																									31,460,000
Restricted stock awarded and earned stock compensation, net of shares forfeited	5,495,000																		2,000				5,493,000
Restricted stock surrendered	(2,699,000)																						(2,699,000)
Dividend Reinvestment Plan	72,000																						72,000
Shares Repurchased Under Stock Repurchased Program, Including Excise Tax				$ (38,931,000)													$ (27,000)							$ (38,904,000)
Dividends, Preferred Stock	(9,947,000)
Cash dividends paid	(17,311,000)																						(17,311,000)
Stock Issued During Period, Shares, Dividend Reinvestment Plan												5,146
Conversion of non-voting common stock equivalents to Voting Common Stock								0				(2,684,823)
Ending Period Balance at Mar. 31, 2025	$ 3,521,656,000																	498,516,000	1,561,000	5,000		98,000	3,732,376,000		(387,580,000)	(323,320,000)
Stockholders' Equity Disclosure [Rollforward]
Preferred stock outstanding (shares)						513,250
Common stock, outstanding (in shares)										477,321		156,135,165
Common stock, issued (in shares)													(440,587)	(183,480)		(9,790,600)
Preferred stock outstanding (shares)						513,250
Common stock, outstanding (in shares)	149,963,520									477,321		150,039,018
Common stock, issued (in shares)	(150,039,018)								(477,321)							(5,017,064)
Beginning Period Balance at Dec. 31, 2025	$ 3,541,277,000																	498,516,000	1,500,000	5,000		50,000	3,552,483,000		(242,016,000)	(269,261,000)
Stockholders' Equity Disclosure [Rollforward]
Net earnings	71,952,000																								71,952,000
Other comprehensive income, net of tax	1,326,000																									1,326,000
Restricted stock awarded and earned stock compensation, net of shares forfeited	5,636,000																		5,000			0	5,631,000
Conversion of Stock, Amount Issued											$ (40,000)				$ (40,000)
Restricted stock surrendered	(5,574,000)																						(5,574,000)
Dividend Reinvestment Plan	115,000																						115,000
Common shares purchased under Dividend Reinvestment Plan including excise tax	(12,080,000)																				$ (7,000)		(12,073,000)
Non-Voting Common Stock, Equivalents Repurchased	(20,200,000)						$ (10,000)																(20,190,000)
Dividends, Preferred Stock	(9,947,000)
Cash dividends paid	(19,179,000)																						(19,179,000)
Stock Issued During Period, Shares, Dividend Reinvestment Plan												6,634
Stock repurchased (in shares)												(709,935)
Conversion of non-voting common stock equivalents to Voting Common Stock															(1,000,000)
Conversion of Stock, Shares Issued		4,017,064	(4,017,064)
Proceeds from Issuance of Private Placement					$ 0
Ending Period Balance at Mar. 31, 2026	$ 3,553,326,000																	$ 498,516,000	$ 1,538,000	$ 5,000		$ 0	$ 3,501,213,000		$ (180,011,000)	$ (267,935,000)
Stockholders' Equity Disclosure [Rollforward]
Preferred stock outstanding (shares)	513,250					513,250
Common stock, outstanding (in shares)	153,722,123								477,321	477,321		153,784,724
Common stock, issued (in shares)	(153,784,724)								(477,321)				(723,872)	(291,929)		0