CONSOLIDATED STATEMENTS OF EQUITY (unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Series H	Class C Common Stock	Preferred Stock	Preferred Stock Series H	Common Stock	Additional Paid-in Capital	Additional Paid-in Capital Class C Common Stock	Accumulated Other Comprehensive Loss	Retained Earnings
Beginning balance ( in shares) at Dec. 31, 2023				19,980		10,842
Beginning balance at Dec. 31, 2023	$ 1,411,863			$ 484,531		$ 10,842	$ 132,919		$ (40,145)	$ 823,716
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	53,746									53,746
Other comprehensive income (loss) net of tax	36,027								36,027
Cash dividends, preferred stock	(6,791)									(6,791)
Cash dividends, common stock	(15,186)									(15,186)
Issuance of stock (in shares)						27
Issuance of stock	91					$ 27	64
Stock-based compensation cost	3,483						3,483
Other stock-based award activity	(2,890)						(2,890)
Ending balance (in shares) at Mar. 31, 2024				19,980		10,869
Ending balance at Mar. 31, 2024	1,480,343			$ 484,531		$ 10,869	133,576		(4,118)	855,485
Beginning balance ( in shares) at Dec. 31, 2023				19,980		10,842
Beginning balance at Dec. 31, 2023	1,411,863			$ 484,531		$ 10,842	132,919		(40,145)	823,716
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	150,679
Other comprehensive income (loss) net of tax	37,591
Ending balance (in shares) at Sep. 30, 2024				16,980		10,885
Ending balance at Sep. 30, 2024	1,462,344			$ 411,149		$ 10,885	135,225		(2,554)	907,639
Beginning balance ( in shares) at Mar. 31, 2024				19,980		10,869
Beginning balance at Mar. 31, 2024	1,480,343			$ 484,531		$ 10,869	133,576		(4,118)	855,485
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	47,105									47,105
Other comprehensive income (loss) net of tax	(5,023)								(5,023)
Cash dividends, preferred stock	(6,792)									(6,792)
Cash dividends, common stock	(15,233)									(15,233)
Issuance of stock (in shares)						12
Issuance of stock	79					$ 12	67
Stock-based compensation cost	1,555						1,555
Other stock-based award activity	(1,055)						(1,055)
Ending balance (in shares) at Jun. 30, 2024				19,980		10,881
Ending balance at Jun. 30, 2024	1,500,979			$ 484,531		$ 10,881	134,143		(9,141)	880,565
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	49,828									49,828
Other comprehensive income (loss) net of tax	6,587								6,587
Cash dividends, preferred stock	(5,897)									(5,897)
Cash dividends, common stock	(15,238)									(15,238)
Redemption of Series C preferred stock ( in shares)				(3,000)
Redemption of Series C preferred stock	(73,382)			$ (73,382)
Loss on retirement of preferred stock	(1,619)									(1,619)
Issuance of stock (in shares)						4
Issuance of stock	82					$ 4	78
Stock-based compensation cost	1,490						1,490
Other stock-based award activity	(486)						(486)
Ending balance (in shares) at Sep. 30, 2024				16,980		10,885
Ending balance at Sep. 30, 2024	1,462,344			$ 411,149		$ 10,885	135,225		(2,554)	907,639
Beginning balance ( in shares) at Dec. 31, 2024				16,980		10,891
Beginning balance at Dec. 31, 2024	1,489,026			$ 411,149		$ 10,891	135,894		(12,147)	943,239
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	49,651									49,651
Other comprehensive income (loss) net of tax	10,339								10,339
Cash dividends, preferred stock	(5,666)									(5,666)
Cash dividends, common stock	(16,352)									(16,352)
Issuance of stock (in shares)						42
Issuance of stock	121					$ 42	79
Stock-based compensation cost	3,529						3,529
Other stock-based award activity	(5,002)						(5,002)
Ending balance (in shares) at Mar. 31, 2025				16,980		10,933
Ending balance at Mar. 31, 2025	1,525,646			$ 411,149		$ 10,933	134,500		(1,808)	970,872
Beginning balance ( in shares) at Dec. 31, 2024				16,980		10,891
Beginning balance at Dec. 31, 2024	1,489,026			$ 411,149		$ 10,891	135,894		(12,147)	943,239
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	159,491
Other comprehensive income (loss) net of tax	6,716
Ending balance (in shares) at Sep. 30, 2025				20,980		10,934
Ending balance at Sep. 30, 2025	1,687,083			$ 508,038		$ 10,934	137,602		(5,431)	1,035,940
Beginning balance ( in shares) at Mar. 31, 2025				16,980		10,933
Beginning balance at Mar. 31, 2025	1,525,646			$ 411,149		$ 10,933	134,500		(1,808)	970,872
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	54,837									54,837
Other comprehensive income (loss) net of tax	(15,857)								(15,857)
Cash dividends, preferred stock	(5,667)									(5,667)
Cash dividends, common stock	(16,401)									(16,401)
Issuance of stock (in shares)						1
Issuance of stock	81					$ 1	80
Stock-based compensation cost	1,745						1,745
Other stock-based award activity	(77)						(77)
Ending balance (in shares) at Jun. 30, 2025				16,980		10,934
Ending balance at Jun. 30, 2025	1,544,307			$ 411,149		$ 10,934	136,248		(17,665)	1,003,641
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	55,003									55,003
Other comprehensive income (loss) net of tax	12,234								12,234
Cash dividends, preferred stock	(6,303)									(6,303)
Cash dividends, common stock	(16,401)									(16,401)
Issuance of stock (in shares)					4,000
Issuance of stock		$ 96,889	$ 65		$ 96,889			$ 65
Stock-based compensation cost	1,360						1,360
Other stock-based award activity	(71)						(71)
Ending balance (in shares) at Sep. 30, 2025				20,980		10,934
Ending balance at Sep. 30, 2025	$ 1,687,083			$ 508,038		$ 10,934	$ 137,602		$ (5,431)	$ 1,035,940