Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Retained Earnings (Accumulated Deficit)	Total
Balance at Dec. 31, 2020	$ 433	$ 118,269	$ (78,080)	$ 40,622
Balance (in shares) at Dec. 31, 2020	43,347,887
Issuance of common stock upon exercise of stock options	$ 14	187		201
Issuance of common stock upon exercise of stock options (in shares)	1,398,979
Excess tax benefits from exercise of stock options		(2,655)		(2,655)
Issuance of common stock for services	$ 1			1
Issuance of common stock for services (in shares)	12,059
Share-based compensation		511		511
Net income			32,259	32,259
Balance at Dec. 31, 2021	$ 448	116,312	(45,821)	70,939
Balance (in shares) at Dec. 31, 2021	44,758,925
Issuance of common stock upon exercise of stock options	$ 5	177		182
Issuance of common stock upon exercise of stock options (in shares)	519,749
Excess tax benefits from exercise of stock options		(969)		(969)
Issuance of common stock for services (in shares)	8,945
Share-based compensation		922		922
Net income			103,801	103,801
Balance at Dec. 31, 2022	$ 453	116,442	57,980	174,875
Balance (in shares) at Dec. 31, 2022	45,287,619
Issuance of common stock upon exercise of stock options	$ 2	37		39
Issuance of common stock upon exercise of stock options (in shares)	214,761
Excess tax benefits from exercise of stock options		(694)		(694)
Share-based compensation		2,306		2,306
Net income			52,247	52,247
Balance at Dec. 31, 2023	$ 455	$ 118,091	$ 110,227	$ 228,773
Balance (in shares) at Dec. 31, 2023	45,502,380