Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Treasury Stock, Common [Member]	Total
Balance (in shares) at Dec. 31, 2021	23,477,784				1,554,905
Balance at Dec. 31, 2021	$ 235	$ 181,630	$ 88,125	$ (3,435)	$ (12,404)	$ 254,151
Net income			6,038			6,038
Other comprehensive income (loss)				(1,189)		(1,189)
Issuance of common stock for stock options exercised (in shares)	24,917
Issuance of common stock for stock options exercised	$ 0	508				508
Vested restricted stock units (in shares)	7,158
Vested restricted stock units	$ 0	0				0
Stock-based compensation expense		1,167				1,167
Repurchase of common stock for net settlement of equity awards (in shares)					3,016
Repurchase of common stock for net settlement of equity awards					$ (145)	(145)
Common stock dividend paid			(2,743)			(2,743)
Balance (in shares) at Mar. 31, 2022	23,509,859				1,557,921
Balance at Mar. 31, 2022	$ 235	183,305	91,420	(4,624)	$ (12,549)	257,787
Balance (in shares) at Dec. 31, 2021	23,477,784				1,554,905
Balance at Dec. 31, 2021	$ 235	181,630	88,125	(3,435)	$ (12,404)	254,151
Net income						15,009
Other comprehensive income (loss)						(4,692)
Balance (in shares) at Sep. 30, 2022	23,558,954				1,558,074
Balance at Sep. 30, 2022	$ 236	186,798	94,896	(8,127)	$ (12,556)	261,247
Balance (in shares) at Mar. 31, 2022	23,509,859				1,557,921
Balance at Mar. 31, 2022	$ 235	183,305	91,420	(4,624)	$ (12,549)	257,787
Net income			3,515			3,515
Other comprehensive income (loss)				(1,820)		(1,820)
Issuance of common stock for stock options exercised (in shares)	10,808
Issuance of common stock for stock options exercised	$ 0	164				164
Vested restricted stock units (in shares)	221
Vested restricted stock units	$ 0	0				0
Stock-based compensation expense		1,136				1,136
Repurchase of common stock for net settlement of equity awards (in shares)					98
Repurchase of common stock for net settlement of equity awards					$ (4)	(4)
Common stock dividend paid			(2,745)			(2,745)
Balance (in shares) at Jun. 30, 2022	23,520,888				1,558,019
Balance at Jun. 30, 2022	$ 235	184,605	92,190	(6,444)	$ (12,553)	258,033
Net income			5,456			5,456
Other comprehensive income (loss)				(1,683)		(1,683)
Issuance of common stock for stock options exercised (in shares)	37,786
Issuance of common stock for stock options exercised	$ 1	1,007				1,008
Vested restricted stock units (in shares)	280
Vested restricted stock units	$ 0	0				0
Stock-based compensation expense		1,186				1,186
Repurchase of common stock for net settlement of equity awards (in shares)					55
Repurchase of common stock for net settlement of equity awards					$ (3)	(3)
Common stock dividend paid			(2,750)			(2,750)
Balance (in shares) at Sep. 30, 2022	23,558,954				1,558,074
Balance at Sep. 30, 2022	$ 236	186,798	94,896	(8,127)	$ (12,556)	261,247
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				0
Stock-based compensation expense		1,290				1,290
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)
Common stock dividend paid			(3,099)			(3,099)
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
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						21,640
Other comprehensive income (loss)						(674)
Balance (in shares) at Sep. 30, 2023	23,835,670				1,572,435
Balance at Sep. 30, 2023	$ 239	198,254	110,081	(6,705)	$ (13,232)	288,637
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				0
Stock-based compensation expense		1,312				1,312
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)
Common stock dividend paid			(3,116)			(3,116)
Balance (in shares) at Jun. 30, 2023	23,835,491				1,572,348
Balance at Jun. 30, 2023	$ 239	196,941	105,696	(5,822)	$ (13,227)	283,827
Net income			7,502			7,502
Other comprehensive income (loss)				(883)		(883)
Issuance of common stock for stock options exercised (in shares)	0
Issuance of common stock for stock options exercised	$ 0	0				0
Vested restricted stock units (in shares)	179
Vested restricted stock units	$ 0	0				0
Stock-based compensation expense		1,313				1,313
Repurchase of common stock for net settlement of equity awards (in shares)					87
Repurchase of common stock for net settlement of equity awards					$ (5)	(5)
Common stock dividend paid			(3,117)			(3,117)
Balance (in shares) at Sep. 30, 2023	23,835,670				1,572,435
Balance at Sep. 30, 2023	$ 239	$ 198,254	$ 110,081	$ (6,705)	$ (13,232)	$ 288,637