CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Capital Surplus	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Unvested Restricted Stock	Vested Restricted Stock Units
Beginning balance (in shares) at Dec. 31, 2021		0	9,012,857
Beginning balance at Dec. 31, 2021	$ 177,198	$ 0	$ 45,064	$ 80,640	$ 49,858	$ 2,113	$ (477)	$ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 27,071				27,071
Exercise of common stock options (in shares)	15,300,000		15,300
Exercise of common stock options	$ 222		$ 78	144
Issuance of restricted stock (in shares)			24,265
Issuance of restricted stock	0		$ 121	379			(500)
Vesting of restricted stock units	0		$ 179	840				(1,019)
Repurchase of common stock under the stock repurchase program (in shares)			(345,502)
Repurchase of common stock under the stock repurchase program	(7,358)		$ (1,728)	(5,630)
Stock-based compensation	912			412			500
Common stock dividends paid	(3,165)				(3,165)
Other comprehensive loss	(13,161)					(13,161)
Ending balance (in shares) at Dec. 31, 2022		0	8,706,920
Ending balance at Dec. 31, 2022	181,719	$ 0	$ 43,714	76,785	73,764	(11,048)	(477)	(1,019)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	31,952				31,952
Issuance of common stock (in shares)			4,875
Issuance of common stock	$ 109		$ 24	85
Exercise of common stock options (in shares)	180,141,000		143,644
Exercise of common stock options	$ 1,454		$ 718	736
Issuance of restricted stock (in shares)			23,534
Issuance of restricted stock	0		$ 118	565			(683)
Forfeiture of restricted stock (in shares)			(7,135)
Forfeiture of restricted stock	0		$ (36)	(141)			177
Vesting of restricted stock units	0		$ 157	741				(898)
Issuance of restricted stock units (in shares)			12,713
Issuance of restricted stock units	363							363
Repurchase of common stock under the stock repurchase program (in shares)			(43,202)
Repurchase of common stock under the stock repurchase program	(979)		$ (216)	(763)
Stock-based compensation	870			353			517
Common stock dividends paid	(3,193)				(3,193)
Other comprehensive loss	2,669					2,669
Ending balance (in shares) at Dec. 31, 2023		0	8,841,349
Ending balance at Dec. 31, 2023	$ 214,964	$ 0	$ 44,479	$ 78,361	$ 102,523	$ (8,379)	$ (466)	$ (1,554)