Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Total
Balance at Dec. 31, 2020	$ 2	$ 174,584	$ (157,174)	$ 17,412
Balance (in shares) at Dec. 31, 2020	19,031,556
Increase (Decrease) in Stockholders' Equity
Issuance of common stock under stock incentive plans and exercise of stock options		2,256		2,256
Issuance of common stock under stock incentive plans and exercise of stock options (in shares)	805,441
Exercise of warrants (in shares)	21,463
Stock-based compensation expense		3,227		3,227
Net income			4,343	4,343
Balance at Dec. 31, 2021	$ 2	180,067	(152,831)	27,238
Balance (in shares) at Dec. 31, 2021	19,858,460
Increase (Decrease) in Stockholders' Equity
Issuance of common stock under stock incentive plans and exercise of stock options		889		889
Issuance of common stock under stock incentive plans and exercise of stock options (in shares)	515,828
Stock-based compensation expense		4,408		4,408
Net income			6,129	6,129
Balance at Dec. 31, 2022	$ 2	$ 185,364	$ (146,702)	$ 38,664
Balance (in shares) at Dec. 31, 2022	20,374,288