Consolidated Statements of Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balances (in shares) at Dec. 31, 2020	59,526,171
Balances at Dec. 31, 2020	$ 6	$ 153,571	$ (153,561)	$ 325	$ 341
Issuance of common stock (in shares)	960,540
Issuance of common stock	$ 0	9,250	0	0	9,250
Exercise of stock options (in shares)	427,444
Exercise of stock options	$ 0	443	0	0	443
Exercise of warrants (in shares)	1,119,750
Exercise of warrants	$ 0	11	0	0	11
Exercise of underwriter’s option (in shares)	54,083
Exercise of underwriter’s option	$ 0	0	0	0	0
Stock-based compensation expense	$ 0	12,384	0	0	12,384
Issuance of common stock upon vesting of restricted stock awards (in shares)	224,109
Issuance of common stock upon vesting of restricted stock awards	$ 0	0	0	0	0
Foreign currency translation adjustments	0	0	0	(92)	(92)
Net loss	$ 0	0	(9,740)	0	(9,740)
Reclassification of common stock warrant liability to permanent equity					0
Balances (in shares) at Dec. 31, 2021	62,312,097
Balances at Dec. 31, 2021	$ 6	175,659	(163,301)	233	12,597
Issuance of common stock (in shares)	11,082,695
Issuance of common stock	$ 1	11,459	0	0	$ 11,460
Exercise of stock options (in shares)	1,219,360				1,219,360
Exercise of stock options	$ 0	310	0	0	$ 310
Stock-based compensation expense	$ 0	8,513	0	0	8,513
Issuance of common stock upon vesting of restricted stock awards (in shares)	145,439
Issuance of common stock upon vesting of restricted stock awards	$ 0	0	0	0	0
Foreign currency translation adjustments	0	0	0	(16)	(16)
Net loss	0	0	(29,918)	0	(29,918)
Reclassification of common stock warrant liability to permanent equity	0	305	0	0	305
Unrealized loss on available-for-sale securities	$ 0	0	0	(14)	(14)
Balances (in shares) at Dec. 31, 2022	74,759,591
Balances at Dec. 31, 2022	$ 7	$ 196,246	$ (193,219)	$ 203	$ 3,237