Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Warrants at $6.50 Per Share [Member] Common Stock [Member]	Warrants at $6.50 Per Share [Member] Additional Paid-in Capital [Member]	Warrants at $6.50 Per Share [Member] Retained Earnings [Member]	Warrants at $6.50 Per Share [Member] AOCI Attributable to Parent [Member]	Warrants at $6.50 Per Share [Member]	Warrants at $5.00 Per Share [Member] Common Stock [Member]	Warrants at $5.00 Per Share [Member] Additional Paid-in Capital [Member]	Warrants at $5.00 Per Share [Member] Retained Earnings [Member]	Warrants at $5.00 Per Share [Member] AOCI Attributable to Parent [Member]	Warrants at $5.00 Per Share [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2020											37,554,162
Balance at Dec. 31, 2020											$ 4	$ 71,705	$ (25,310)	$ 15	$ 46,414
Share-based compensation expense												3,007			3,007
Common shares issued upon vesting of restricted stock units (in shares)											342,274
Net unrealized gain (loss) on short-term investments											$ 0	0	0	(2)	(2)
Net loss for the period													(13,228)		(13,228)
Common shares issued upon exercise of stock options (in shares)											157,066
Common shares issued upon exercise of stock options												278			278
Common shares issued for services (in shares)											42,876
Common shares issued for services												239			239
Net unrealized gain (loss) on short-term investments											$ 0	0	0	(2)	(2)
Common shares issued upon exercise of warrants (in shares)	1,661,320
Common shares issued upon exercise of warrants	$ 0	$ 10,799	$ 0	$ 0	$ 10,799
Common shares issued upon exercise of warrants, net of issuance costs (in shares)						153,692
Common shares issued upon exercise of warrants, net of issuance costs						$ 0	$ 1,249	$ 0	$ 0	$ 1,249
Balance (in shares) at Jun. 30, 2021											39,911,390
Balance at Jun. 30, 2021											$ 4	87,277	(38,538)	13	48,756
Balance (in shares) at Mar. 31, 2021											37,711,698
Balance at Mar. 31, 2021											$ 4	72,777	(30,739)	17	42,059
Share-based compensation expense												2,148			2,148
Common shares issued upon vesting of restricted stock units (in shares)											277,614
Net unrealized gain (loss) on short-term investments											$ 0	0	0	(4)	(4)
Net loss for the period													(7,799)		(7,799)
Common shares issued upon exercise of stock options (in shares)											82,066
Common shares issued upon exercise of stock options												165			165
Common shares issued for services (in shares)											25,000
Common shares issued for services												139			139
Net unrealized gain (loss) on short-term investments											$ 0	0	0	(4)	(4)
Common shares issued upon exercise of warrants (in shares)	1,661,320
Common shares issued upon exercise of warrants	$ 0	$ 10,799	$ 0	$ 0	$ 10,799
Common shares issued upon exercise of warrants, net of issuance costs (in shares)						153,692
Common shares issued upon exercise of warrants, net of issuance costs						$ 0	$ 1,249	$ 0	$ 0	$ 1,249
Balance (in shares) at Jun. 30, 2021											39,911,390
Balance at Jun. 30, 2021											$ 4	87,277	(38,538)	13	48,756
Balance (in shares) at Dec. 31, 2021											40,851,945
Balance at Dec. 31, 2021											$ 4	91,025	(49,759)	(6)	41,264
Share-based compensation expense												1,756			1,756
Common shares issued upon vesting of restricted stock units (in shares)											90,216
Net unrealized gain (loss) on short-term investments											$ 0	0	0	(11)	(11)
Net loss for the period													(10,217)		$ (10,217)
Common shares issued upon exercise of stock options (in shares)											50,000				50,000
Common shares issued upon exercise of stock options												75			$ 75
Common shares issued for services (in shares)											0
Common shares issued for services												0			0
Net unrealized gain (loss) on short-term investments											$ 0	0	0	(11)	(11)
Balance (in shares) at Jun. 30, 2022											40,992,161
Balance at Jun. 30, 2022											$ 4	92,856	(59,976)	(17)	32,867
Balance (in shares) at Mar. 31, 2022											40,951,197
Balance at Mar. 31, 2022											$ 4	92,129	(55,191)	(29)	36,913
Share-based compensation expense												727			727
Common shares issued upon vesting of restricted stock units (in shares)											40,964
Net unrealized gain (loss) on short-term investments														12	12
Net loss for the period													(4,785)		(4,785)
Net unrealized gain (loss) on short-term investments														12	12
Balance (in shares) at Jun. 30, 2022											40,992,161
Balance at Jun. 30, 2022											$ 4	$ 92,856	$ (59,976)	$ (17)	$ 32,867