CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - UNAUDITED - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income/ (Loss)
Balance at beginning of period at Dec. 31, 2022	$ 1,483,768	$ 44,657	$ 734,273	$ 836,789	$ (131,951)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)	75,998			75,998
Other comprehensive income, net of tax	6,326				6,326
Comprehensive income	82,324
Common stock dividends	(30,732)			(30,732)
Stock compensation expense	3,972		3,972
Stock option plan	517	41	476
Employee stock purchase plan	844	31	813
Restricted stock vesting, net of tax withholding	(1,661)	133	(1,794)
Balance at end of period at Jun. 30, 2023	1,539,032	44,862	737,740	882,055	(125,625)
Balance at beginning of period at Mar. 31, 2023	1,536,865	44,712	735,509	872,635	(115,991)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)	24,745			24,745
Other comprehensive income, net of tax	(9,634)				(9,634)
Comprehensive income	15,111
Common stock dividends	(15,325)			(15,325)
Stock compensation expense	2,731		2,731
Stock option plan	366	34	332
Employee stock purchase plan	433	19	414
Restricted stock vesting, net of tax withholding	(1,149)	97	(1,246)
Balance at end of period at Jun. 30, 2023	1,539,032	44,862	737,740	882,055	(125,625)
Balance at beginning of period at Dec. 31, 2023	1,588,142	44,914	742,243	898,316	(97,331)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)	43,179			43,179
Other comprehensive income, net of tax	(4,663)				(4,663)
Comprehensive income	38,516
Common stock dividends	(30,943)			(30,943)
Stock compensation expense	3,861		3,861
Stock option plan	109	10	99
Employee stock purchase plan	719	35	684
Restricted stock vesting, net of tax withholding	(1,400)	151	(1,551)
Balance at end of period at Jun. 30, 2024	1,599,004	45,110	745,336	910,552	(101,994)
Balance at beginning of period at Mar. 31, 2024	1,589,364	44,940	743,850	903,377	(102,803)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss)	22,807			22,807
Other comprehensive income, net of tax	809				809
Comprehensive income	23,616
Common stock dividends	(15,632)			(15,632)
Stock compensation expense	2,631		2,631
Employee stock purchase plan	368	19	349
Restricted stock vesting, net of tax withholding	(1,343)	151	(1,494)
Balance at end of period at Jun. 30, 2024	$ 1,599,004	$ 45,110	$ 745,336	$ 910,552	$ (101,994)