Consolidated Statements of Changes in Stockholders’ Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Unallocated Common Stock Held by the Employee Stock Ownership Plan	Retained Earnings	Accumulated Other Comprehensive Income (loss) Net of tax	Treasury Stock
Beginning Balance, Common Stock (in shares) at Dec. 31, 2021		49,266,733
Beginning Balance at Dec. 31, 2021	$ 739,883	$ 648	$ 589,972	$ (17,058)	$ 381,361	$ 2,063	$ (217,103)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	46,980				46,980
Other comprehensive income (loss), net of tax	(55,897)					(55,897)
ESOP shares allocated or committed to be released	1,271		557	714
Stock compensation expense	1,301		1,301
Restricted stock issuance (in shares)		157,416
Restricted stock issuance	0		(2,484)				2,484
Restricted stock forfeitures (in shares)		(18,515)
Restricted stock forfeitures	0		265				(265)
Exercise of stock options, net (in shares)		18,040
Exercise of stock options, net	244		(9)				253
Cash dividends declared and paid	(18,207)				(18,207)
Repurchase of treasury stock (in shares)		(1,535,298)
Repurchase of treasury stock	(22,273)						(22,273)
Ending Balance, Common Stock (in shares) at Sep. 30, 2022		47,888,376
Ending Balance at Sep. 30, 2022	693,302	$ 648	589,602	(16,344)	410,134	(53,834)	(236,904)
Beginning Balance, Common Stock (in shares) at Jun. 30, 2022		48,684,875
Beginning Balance at Jun. 30, 2022	715,273	$ 648	588,940	(16,584)	399,131	(31,266)	(225,596)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	16,979				16,979
Other comprehensive income (loss), net of tax	(22,568)					(22,568)
ESOP shares allocated or committed to be released	419		179	240
Stock compensation expense	456		456
Restricted stock forfeitures (in shares)		(1,902)
Restricted stock forfeitures	0		28				(28)
Exercise of stock options, net (in shares)		1,000
Exercise of stock options, net	13		(1)				14
Cash dividends declared and paid	(5,976)				(5,976)
Repurchase of treasury stock (in shares)		(795,597)
Repurchase of treasury stock	(11,294)						(11,294)
Ending Balance, Common Stock (in shares) at Sep. 30, 2022		47,888,376
Ending Balance at Sep. 30, 2022	$ 693,302	$ 648	589,602	(16,344)	410,134	(53,834)	(236,904)
Beginning Balance, Common Stock (in shares) at Dec. 31, 2022	47,442,488	47,442,488
Beginning Balance at Dec. 31, 2022	$ 701,390	$ 648	590,249	(15,650)	418,353	(48,331)	(243,879)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	29,447				29,447
Other comprehensive income (loss), net of tax	348					348
ESOP shares allocated or committed to be released	999		307	692
Stock compensation expense	1,803		1,803
Restricted stock issuance (in shares)		173,060
Restricted stock issuance	0		(2,670)				2,670
Restricted stock forfeitures (in shares)		(23,219)
Restricted stock forfeitures	$ 0		336				(336)
Exercise of stock options, net (in shares)	7,600	7,600
Exercise of stock options, net	$ 100		(7)				107
Cash dividends declared and paid	(17,265)				(17,265)
Repurchase of treasury stock (in shares)		(2,643,811)
Repurchase of treasury stock	$ (32,747)						(32,747)
Ending Balance, Common Stock (in shares) at Sep. 30, 2023	44,956,118	44,956,118
Ending Balance at Sep. 30, 2023	$ 684,075	$ 648	590,018	(14,958)	430,535	(47,983)	(274,185)
Beginning Balance, Common Stock (in shares) at Jun. 30, 2023		45,243,673
Beginning Balance at Jun. 30, 2023	686,641	$ 648	589,335	(15,192)	427,921	(45,074)	(270,997)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	8,181				8,181
Other comprehensive income (loss), net of tax	(2,909)					(2,909)
ESOP shares allocated or committed to be released	309		75	234
Stock compensation expense	580		580
Restricted stock forfeitures (in shares)		(1,967)
Restricted stock forfeitures	0		28				(28)
Cash dividends declared and paid	(5,567)				(5,567)
Repurchase of treasury stock (in shares)		(285,588)
Repurchase of treasury stock	$ (3,160)						(3,160)
Ending Balance, Common Stock (in shares) at Sep. 30, 2023	44,956,118	44,956,118
Ending Balance at Sep. 30, 2023	$ 684,075	$ 648	$ 590,018	$ (14,958)	$ 430,535	$ (47,983)	$ (274,185)