Consolidated Condensed Statements Of Changes In Stockholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Preferred Stock [Member] Cumulative Effect, Period of Adoption, Adjusted Balance	Common Stock [Member]	Common Stock [Member] Cumulative Effect, Period of Adoption, Adjusted Balance	Retained Earnings [Member]	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjusted Balance	Treasury Stock, Common	Treasury Stock, Common Cumulative Effect, Period of Adoption, Adjusted Balance	Accumulated Other Comprehensive Income (loss) [Member]	Accumulated Other Comprehensive Income (loss) [Member] Cumulative Effect, Period of Adoption, Adjusted Balance
Balance at Dec. 31, 2022		$ 0	$ 0	$ 462,404	$ 462,404	$ 847,235	$ (303)	$ 846,932	$ (138,019)	$ (138,019)	$ (102,394)	$ (102,394)
Net Income						33,733
Other comprehensive income (loss)											12,361
Dividends on common shares						(17,285)
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures				5,309		862			3,564
Share-based Payment Arrangement, Expense				2,336
Stock Repurchased During Period, Value	$ (15,308)
Balance at Mar. 31, 2023		0		459,431		862,518			(149,763)		(90,033)
Common Stock, Dividends, Per Share, Cash Paid	$ 1.05
Balance at Dec. 31, 2022		0	$ 0	462,404	$ 462,404	847,235	$ (303)	$ 846,932	(138,019)	$ (138,019)	(102,394)	$ (102,394)
Net Income	$ 65,317
Other comprehensive income (loss)	5,608
Share-based Payment Arrangement, Expense	4,100
Balance at Jun. 30, 2023		0		460,578		876,830			(151,865)		(96,786)
Balance at Mar. 31, 2023		0		459,431		862,518			(149,763)		(90,033)
Net Income	31,584					31,584
Other comprehensive income (loss)	(6,753)										(6,753)
Dividends on common shares						(17,187)
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures				602		85			450
Share-based Payment Arrangement, Expense	1,700			1,749
Stock Repurchased During Period, Value	$ (2,552)
Balance at Jun. 30, 2023		0		460,578		876,830			(151,865)		(96,786)
Common Stock, Dividends, Per Share, Cash Paid	$ 1.05
Balance at Dec. 31, 2023	$ 1,145,293	0		463,280		903,877			(155,673)		(66,191)
Net Income						35,204
Other comprehensive income (loss)											(204)
Dividends on common shares						(17,287)
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures				5,701		693			3,414
Share-based Payment Arrangement, Expense				1,953
Balance at Mar. 31, 2024		0		459,532		921,101			(152,259)		(66,395)
Common Stock, Dividends, Per Share, Cash Paid	$ 1.06
Balance at Dec. 31, 2023	$ 1,145,293	0		463,280		903,877			(155,673)		(66,191)
Net Income	74,573
Other comprehensive income (loss)	(2,263)
Share-based Payment Arrangement, Expense	3,200
Balance at Jun. 30, 2024	1,183,257	0		460,821		943,149			(152,259)		(68,454)
Balance at Mar. 31, 2024		0		459,532		921,101			(152,259)		(66,395)
Net Income	39,369					39,369
Other comprehensive income (loss)	(2,059)										(2,059)
Dividends on common shares						(17,321)
Share-based Payment Arrangement, Expense	1,300			1,289
Balance at Jun. 30, 2024	$ 1,183,257	$ 0		$ 460,821		$ 943,149			$ (152,259)		$ (68,454)
Common Stock, Dividends, Per Share, Cash Paid	$ 1.06