CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital.	Retained Earnings.	Accumulated Other Comprehensive Income (Loss)	Total
Balance at Dec. 31, 2021	$ 15,613	$ 273,768	$ 386,077	$ 1,552	$ 677,010
Net Income (Loss)			23,624		23,624
Other comprehensive income (loss), net of tax				(27,340)	(27,340)
Common cash dividends declared			(939)		(939)
Repurchase and cancellation of shares of common stock	(77)	(1,338)	(3,000)		(4,415)
Stock-based compensation expense		751			751
Issuance of common stock under employee benefit plans	44	(811)			(767)
Balance at Mar. 31, 2022	15,580	272,370	405,762	(25,788)	667,924
Balance at Dec. 31, 2021	15,613	273,768	386,077	1,552	677,010
Net Income (Loss)					68,160
Other comprehensive income (loss), net of tax					(76,409)
Balance at Sep. 30, 2022	16,885	372,086	422,958	(74,857)	737,072
Balance at Mar. 31, 2022	15,580	272,370	405,762	(25,788)	667,924
Net Income (Loss)			15,242		15,242
Other comprehensive income (loss), net of tax				(24,286)	(24,286)
Common cash dividends declared			(1,059)		(1,059)
Issuance of shares of common stock as a result of the acquisition	2,071	115,143			117,214
Repurchase and cancellation of shares of common stock	(603)	(13,258)	(19,155)		(33,016)
Stock-based compensation expense		545			545
Issuance of common stock under employee benefit plans	16	558			574
Balance at Jun. 30, 2022	17,064	375,358	400,790	(50,074)	743,138
Net Income (Loss)			29,294		29,294
Other comprehensive income (loss), net of tax				(24,783)	(24,783)
Common cash dividends declared			(1,012)		(1,012)
Repurchase and cancellation of shares of common stock	(190)	(4,181)	(6,114)		(10,485)
Stock-based compensation expense		382			382
Issuance of common stock under employee benefit plans	11	527			538
Balance at Sep. 30, 2022	16,885	372,086	422,958	(74,857)	737,072
Balance at Dec. 31, 2022	16,796	370,712	450,114	(64,898)	772,724
Net Income (Loss)			27,157		27,157
Other comprehensive income (loss), net of tax				9,325	9,325
Common cash dividends declared			(1,010)		(1,010)
Repurchase and cancellation of shares of common stock	(153)	(3,356)	(4,210)		(7,719)
Stock-based compensation expense		953			953
Issuance of common stock under employee benefit plans	71	(7)			64
Balance at Mar. 31, 2023	16,714	368,302	472,051	(55,573)	801,494
Balance at Dec. 31, 2022	16,796	370,712	450,114	(64,898)	772,724
Net Income (Loss)					80,703
Other comprehensive income (loss), net of tax					(16,426)
Balance at Sep. 30, 2023	16,732	369,833	523,142	(81,324)	828,383
Balance at Mar. 31, 2023	16,714	368,302	472,051	(55,573)	801,494
Net Income (Loss)			28,425		28,425
Other comprehensive income (loss), net of tax				(6,336)	(6,336)
Common cash dividends declared			(1,003)		(1,003)
Repurchase and cancellation of shares of common stock	(23)	(495)	(449)		(967)
Stock-based compensation expense		673			673
Issuance of common stock under employee benefit plans	23	380			403
Balance at Jun. 30, 2023	16,714	368,860	499,024	(61,909)	822,689
Net Income (Loss)			25,121		25,121
Other comprehensive income (loss), net of tax				(19,415)	(19,415)
Common cash dividends declared			(1,003)		(1,003)
Stock-based compensation expense		527			527
Issuance of common stock under employee benefit plans	18	446			464
Balance at Sep. 30, 2023	$ 16,732	$ 369,833	$ 523,142	$ (81,324)	$ 828,383