Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2021		23,665,991
Beginning balance at Dec. 31, 2021	$ 48,787	$ 237	$ 182,482	$ (133,932)
Issuances of common stock:
Share-based compensation (in shares)		29,916
Share-based compensation	899		899
Warrant and option exercises (cash and cashless) (in shares)		12,211
Warrant and option exercises (cash and cashless)	3		3
Net loss for the period	(3,959)			(3,959)
Ending balance (in shares) at Mar. 31, 2022		23,708,118
Ending balance at Mar. 31, 2022	45,730	$ 237	183,384	(137,891)
Beginning balance (in shares) at Dec. 31, 2021		23,665,991
Beginning balance at Dec. 31, 2021	48,787	$ 237	182,482	(133,932)
Issuances of common stock:
Net loss for the period	(8,262)
Ending balance (in shares) at Jun. 30, 2022		24,480,600
Ending balance at Jun. 30, 2022	42,820	$ 245	184,769	(142,194)
Beginning balance (in shares) at Mar. 31, 2022		23,708,118
Beginning balance at Mar. 31, 2022	45,730	$ 237	183,384	(137,891)
Issuances of common stock:
Share-based compensation (in shares)		379,122
Share-based compensation	880	$ 4	876
Warrant and option exercises (cash and cashless) (in shares)		367,006
Warrant and option exercises (cash and cashless)	253	$ 4	249
Issuance of common stock under employee stock purchase plan (in shares)		26,354
Issuance of common stock under employee stock purchase plan	260		260
Net loss for the period	(4,303)			(4,303)
Ending balance (in shares) at Jun. 30, 2022		24,480,600
Ending balance at Jun. 30, 2022	$ 42,820	$ 245	184,769	(142,194)
Beginning balance (in shares) at Dec. 31, 2022	24,578,983	24,578,983
Beginning balance at Dec. 31, 2022	$ 36,887	$ 246	187,008	(150,367)
Issuances of common stock:
Share-based compensation (in shares)		3,782
Share-based compensation	1,307		1,307
Payments for taxes related to net share settlement of equity awards (in shares)		(514)
Payments for taxes related to net share settlement of equity awards	(5)		(5)
Net loss for the period	(5,609)			(5,609)
Ending balance (in shares) at Mar. 31, 2023		24,582,251
Ending balance at Mar. 31, 2023	$ 32,580	$ 246	188,310	(155,976)
Beginning balance (in shares) at Dec. 31, 2022	24,578,983	24,578,983
Beginning balance at Dec. 31, 2022	$ 36,887	$ 246	187,008	(150,367)
Issuances of common stock:
Net loss for the period	$ (12,661)
Ending balance (in shares) at Jun. 30, 2023	24,627,674	24,627,674
Ending balance at Jun. 30, 2023	$ 27,410	$ 246	190,192	(163,028)
Beginning balance (in shares) at Mar. 31, 2023		24,582,251
Beginning balance at Mar. 31, 2023	32,580	$ 246	188,310	(155,976)
Issuances of common stock:
Share-based compensation (in shares)		5,484
Share-based compensation	1,645		1,645
Payments for taxes related to net share settlement of equity awards (in shares)		(11,102)
Payments for taxes related to net share settlement of equity awards	(77)		(77)
Issuance of common stock under employee stock purchase plan (in shares)		51,041
Issuance of common stock under employee stock purchase plan	314		314
Net loss for the period	$ (7,052)			(7,052)
Ending balance (in shares) at Jun. 30, 2023	24,627,674	24,627,674
Ending balance at Jun. 30, 2023	$ 27,410	$ 246	$ 190,192	$ (163,028)