Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member] Restricted Stock Units (RSUs) [Member]	Common Stock [Member] Performance-based Restricted Units [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock, Common [Member]	Restricted Stock Units (RSUs) [Member]	Performance-based Restricted Units [Member]	Total
Balance (in shares) at Dec. 31, 2022			23,655,716				1,568,595
Balance at Dec. 31, 2022			$ 237	$ 189,268	$ 97,773	$ (6,031)	$ (13,046)			$ 268,201
Net income					6,040					6,040
Other comprehensive income (loss)						459				459
Issuance of common stock for stock options exercised (in shares)			50,424
Issuance of common stock for stock options exercised			$ 1	1,445						1,446
Vested restricted stock units (in shares)	8,773
Vested restricted stock units	$ 0							$ 0
Repurchase of common stock for net settlement of equity awards (in shares)							3,602
Repurchase of common stock for net settlement of equity awards							$ (172)			(172)
Stock-based compensation expense				1,290						1,290
Common stock dividend paid					(3,099)					(3,099)
Balance (in shares) at Dec. 31, 2022			23,655,716				1,568,595
Balance at Dec. 31, 2022			$ 237	189,268	97,773	(6,031)	$ (13,046)			268,201
Net income										14,138
Other comprehensive income (loss)										209
Balance (in shares) at Mar. 31, 2023			23,714,913				1,572,197
Balance at Mar. 31, 2023			$ 238	192,003	100,714	(5,572)	$ (13,218)			274,165
Net income					8,098					8,098
Other comprehensive income (loss)						(250)				(250)
Issuance of common stock for stock options exercised (in shares)			120,179
Issuance of common stock for stock options exercised			$ 1	3,626						3,627
Vested restricted stock units (in shares)			399
Vested restricted stock units			$ 0							0
Repurchase of common stock for net settlement of equity awards (in shares)							151
Repurchase of common stock for net settlement of equity awards							$ (9)			(9)
Stock-based compensation expense				1,312						1,312
Common stock dividend paid					(3,116)					(3,116)
Balance (in shares) at Dec. 31, 2023			23,911,760				1,584,512
Balance at Dec. 31, 2023			$ 239	200,755	115,430	(4,625)	$ (13,899)			297,900
Net income					9,887					9,887
Other comprehensive income (loss)						(933)				(933)
Issuance of common stock for stock options exercised (in shares)			107,930
Issuance of common stock for stock options exercised			$ 1	3,985						3,986
Vested restricted stock units (in shares)	9,547	7,063
Vested restricted stock units	$ 0	$ 0						0	$ 0
Repurchase of common stock for net settlement of equity awards (in shares)							5,850
Repurchase of common stock for net settlement of equity awards							$ (358)			(358)
Stock-based compensation expense				1,610						1,610
Common stock dividend paid					(3,589)					(3,589)
Balance (in shares) at Dec. 31, 2023			23,911,760				1,584,512
Balance at Dec. 31, 2023			$ 239	200,755	115,430	(4,625)	$ (13,899)			297,900
Net income										21,713
Other comprehensive income (loss)										(469)
Balance (in shares) at Mar. 31, 2024			24,036,300				1,590,362
Balance at Mar. 31, 2024			$ 240	206,350	121,728	(5,558)	$ (14,257)			308,503
Net income					11,826					11,826
Other comprehensive income (loss)						$ 464				464
Issuance of common stock for stock options exercised (in shares)			22,700
Issuance of common stock for stock options exercised			$ 0	730						730
Vested restricted stock units (in shares)	223	77
Vested restricted stock units	$ 0	$ 0						$ 0	$ 0
Repurchase of common stock for net settlement of equity awards (in shares)							95
Repurchase of common stock for net settlement of equity awards										(7)
Stock-based compensation expense				$ 1,609						1,609
Common stock dividend paid					$ (3,593)					$ (3,593)