CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Beginning balance, value at Dec. 31, 2019	$ 71,257	$ 47,330	$ (8,421)	$ 110,166
Balance at beginning (in shares) at Dec. 31, 2019	22,531
Common stock issued upon exercise of options and warrants	$ 949			949
Common stock issued upon exercise of options and warrants (in shares)	558
Repurchase of common stock	$ (1,215)			(1,215)
Repurchase of common stock (in shares)	(352)
Other comprehensive income (loss)			(150)	(150)
Stock-based compensation	1,935			1,935
Net income		21,677		21,677
Ending balance, value at Dec. 31, 2020	$ 72,926	69,007	(8,571)	133,362
Balance at end (in shares) at Dec. 31, 2020	22,737
Common stock issued upon exercise of options and warrants	$ 6,048			6,048
Common stock issued upon exercise of options and warrants (in shares)	2,291
Repurchase of common stock	$ (25,676)			(25,676)
Repurchase of common stock (in shares)	(3,884)
Other comprehensive income (loss)			6,949	6,949
Stock-based compensation	2,000			2,000
Net income		47,524		47,524
Ending balance, value at Dec. 31, 2021	$ 55,298	116,531	(1,622)	170,207
Balance at end (in shares) at Dec. 31, 2021	21,144
Common stock issued upon exercise of options and warrants	$ 15,277			15,277
Common stock issued upon exercise of options and warrants (in shares)	3,127
Repurchase of common stock	$ (46,096)			(46,096)
Repurchase of common stock (in shares)	(4,140)
Other comprehensive income (loss)			(1,409)	(1,409)
Stock-based compensation	4,427			4,427
Net income		85,983		85,983
Ending balance, value at Dec. 31, 2022	$ 28,906	$ 202,514	$ (3,031)	$ 228,389
Balance at end (in shares) at Dec. 31, 2022	20,131