Consolidated Statement of Changes in Shareholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Common Stock Issuable	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss), Net	Treasury Stock
Beginning balance at Dec. 31, 2023	$ 26,957,000	$ 2,011,000	$ 90,000	$ 1,000	$ 10,020,000	$ 17,524,000	$ (459,000)	$ (2,230,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income	401,000					531,000
Preferred stock cash dividends	(25,000)					(25,000)
Stock-based compensation transactions, net	54,000				(44,000)			98,000
Common stock cash dividends	(218,000)					(218,000)
Ending balance at Mar. 31, 2024	27,169,000	2,011,000	90,000	1,000	9,976,000	17,812,000	(589,000)	(2,132,000)
Beginning balance at Dec. 31, 2024	29,027,000	2,394,000	90,000	1,000	9,998,000	19,079,000	(164,000)	(2,371,000)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income	838,000					584,000	254,000
Preferred stock cash dividends	(36,000)					(36,000)
Purchases of treasury stock	(662,000)							(662,000)
Stock-based compensation transactions, net	46,000				(30,000)			76,000
Common stock cash dividends	(222,000)					(222,000)
Ending balance at Mar. 31, 2025	$ 28,991,000	$ 2,394,000	$ 90,000	$ 1,000	$ 9,968,000	$ 19,405,000	$ 90,000	$ (2,957,000)