Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member] Warrants at $6.50 Per Share [Member]	Common Stock [Member] Warrants at $8.125 Per Share [Member]	Common Stock [Member]	Additional Paid-in Capital [Member] Warrants at $6.50 Per Share [Member]	Additional Paid-in Capital [Member] Warrants at $8.125 Per Share [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member] Warrants at $6.50 Per Share [Member]	Retained Earnings [Member] Warrants at $8.125 Per Share [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member] Warrants at $6.50 Per Share [Member]	AOCI Attributable to Parent [Member] Warrants at $8.125 Per Share [Member]	AOCI Attributable to Parent [Member]	Warrants at $6.50 Per Share [Member]	Warrants at $8.125 Per Share [Member]	Total
Balance			$ 4			$ 71,705			$ (25,310)			$ 15			$ 46,414
Balance (in shares) at Dec. 31, 2020			37,554,162
Balance at Dec. 31, 2020			$ 4			71,705			(25,310)			15			46,414
Common shares issued upon exercise of warrants (in shares)	1,661,320	153,692
Common shares issued upon exercise of warrants	$ 0	$ 0		$ 10,798	$ 1,249		$ 0	$ 0		$ 0	$ 0		$ 10,798	$ 1,249
Common shares issued upon exercise of stock options (in shares)			915,404
Common shares issued upon exercise of stock options			$ 0			1,678			0			0			1,678
Common shares issued upon vesting of restricted stock units (in shares)			524,491
Common shares issued upon vesting of restricted stock units			$ 0			0			0			0			0
Common shares issued for services (in shares)			42,876
Common shares issued for services			$ 0			239			0			0			239
Share-based compensation expense			0			5,356			0			0			5,356
Net unrealized gain (loss) on short-term investments			0			0			0			(21)			(21)
Net loss			0			0			(24,449)			0			(24,449)
Net loss for the period			$ 0			0			(24,449)			0			(24,449)
Balance (in shares) at Dec. 31, 2021			40,851,945
Balance			$ 4			91,025			(49,759)			(6)			41,264
Balance at Dec. 31, 2021			$ 4			91,025			(49,759)			(6)			$ 41,264
Common shares issued upon exercise of stock options (in shares)			55,500												55,500
Common shares issued upon exercise of stock options			$ 0			83			0			0			$ 83
Common shares issued upon vesting of restricted stock units (in shares)			268,548
Common shares issued upon vesting of restricted stock units			$ 0			0			0			0			0
Share-based compensation expense			0			3,225			0			0			3,225
Net unrealized gain (loss) on short-term investments			0			0			0			100			100
Net loss			0			0			(17,617)			0			(17,617)
Net loss for the period			$ 0			0			(17,617)			0			(17,617)
Balance (in shares) at Dec. 31, 2022			41,175,993
Balance			$ 4			$ 94,333			$ (67,376)			$ 94			$ 27,055