CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total	Cumulative Effect, Period of Adoption, Adjustment [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Accumulated Other Comprehensive Income (Loss) [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance at Dec. 31, 2021	$ 17,760	$ 133,215	$ 242,750	$ 13,702	$ 407,427	$ 0	$ 0	$ (717)	$ 0	$ (717)
Balance (in shares) at Dec. 31, 2021	17,760,243
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	30,161	0	30,161
Cash dividends declared	0	0	(3,889)	0	(3,889)
Other comprehensive income (loss)	0	0	0	(60,534)	(60,534)
Exercise of employee stock options and vesting of restricted stock units, net of shares for cashless exercise and net of shares for taxes	$ 20	(215)	0	0	(195)
Exercise of employee stock options and vesting of restricted stock units, net of shares for cashless exercise and net of shares for taxes (in shares)	20,337
Repurchases of common stock	$ (363)	(8,845)	0	0	(9,208)
Repurchases of common stock (in shares)	(363,486)
Stock-based compensation	$ 0	1,177	0	0	1,177
Balance at Jun. 30, 2022	$ 17,417	125,332	268,305	(46,832)	364,222
Balance (in shares) at Jun. 30, 2022	17,417,094
Balance at Mar. 31, 2022	$ 17,673	130,618	255,078	(16,301)	387,068	0	0	(717)	0	(717)
Balance (in shares) at Mar. 31, 2022	17,673,407
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	15,883	0	15,883
Cash dividends declared	0	0	(1,939)	0	(1,939)
Other comprehensive income (loss)	0	0	0	(30,531)	(30,531)
Exercise of employee stock options and vesting of restricted stock units, net of shares for cashless exercise and net of shares for taxes	$ 1	(1)	0	0	0
Exercise of employee stock options and vesting of restricted stock units, net of shares for cashless exercise and net of shares for taxes (in shares)	675
Repurchases of common stock	$ (257)	(5,933)	0	0	(6,190)
Repurchases of common stock (in shares)	(256,988)
Stock-based compensation	$ 0	648	0	0	648
Balance at Jun. 30, 2022	$ 17,417	125,332	268,305	(46,832)	364,222
Balance (in shares) at Jun. 30, 2022	17,417,094
Balance at Dec. 31, 2022	$ 17,027	112,834	292,261	(65,108)	$ 357,014
Balance (ASU 2016-13 [Member]) at Dec. 31, 2022						$ 0	$ 0	$ (997)	$ 0	$ (997)
Balance (in shares) at Dec. 31, 2022	17,027,197				17,027,197
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	38,927	0	$ 38,927
Cash dividends declared	0	0	(4,419)	0	(4,419)
Other comprehensive income (loss)	0	0	0	3,280	3,280
Exercise of employee stock options and vesting of restricted stock units, net of shares for cashless exercise and net of shares for taxes	$ 38	(380)	0	0	(342)
Exercise of employee stock options and vesting of restricted stock units, net of shares for cashless exercise and net of shares for taxes (in shares)	37,829
Repurchases of common stock	$ (113)	(2,435)	0	0	(2,548)
Repurchases of common stock (in shares)	(112,954)
Stock-based compensation	$ 0	1,114	0	0	1,114
Balance at Jun. 30, 2023	$ 16,952	111,133	325,772	(61,828)	$ 392,029
Balance (in shares) at Jun. 30, 2023	16,952,072				16,952,072
Balance at Mar. 31, 2023	$ 17,062	112,981	298,300	(60,379)	$ 367,964
Balance (in shares) at Mar. 31, 2023	17,062,572
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	29,683	0	29,683
Cash dividends declared	0	0	(2,211)	0	(2,211)
Other comprehensive income (loss)	0	0	0	(1,449)	(1,449)
Exercise of employee stock options and vesting of restricted stock units, net of shares for cashless exercise and net of shares for taxes	$ 3	(3)	0	0	0
Exercise of employee stock options and vesting of restricted stock units, net of shares for cashless exercise and net of shares for taxes (in shares)	2,454
Repurchases of common stock	$ (113)	(2,435)	0	0	(2,548)
Repurchases of common stock (in shares)	(112,954)
Stock-based compensation	$ 0	590	0	0	590
Balance at Jun. 30, 2023	$ 16,952	$ 111,133	$ 325,772	$ (61,828)	$ 392,029
Balance (in shares) at Jun. 30, 2023	16,952,072				16,952,072