Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Warrants at $3.00 Per Share [Member] Common Stock [Member]	Warrants at $3.00 Per Share [Member] Additional Paid-in Capital [Member]	Warrants at $3.00 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]	Warrants at $6.00 Per Share [Member] Common Stock [Member]	Warrants at $6.00 Per Share [Member] Additional Paid-in Capital [Member]	Warrants at $6.00 Per Share [Member]	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]	Warrants at $8.125 Per Share [Member] Common Stock [Member]	Warrants at $8.125 Per Share [Member] Additional Paid-in Capital [Member]	Warrants at $8.125 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, 2019																29,829,916
Balance at Dec. 31, 2019																$ 3	$ 31,923	$ (12,730)		$ 19,196
Sale of Common Stock and warrant in public offering, net of issuance costs (in shares)																2,066,667
Sale of Common Stock and warrant in public offering, net of issuance costs																	11,667			$ 11,667
Common shares issued upon exercise of warrants, net of issuance costs (in shares)	328,458			3,890,839			675,000			261,679
Common shares issued upon exercise of warrants, net of issuance costs		$ 961	$ 961	$ 1	$ 18,718	$ 18,719		$ 3,848	$ 3,848		$ 1,646	$ 1,646
Common shares issued upon exercise of stock options (in shares)																371,000				371,000
Common shares issued upon exercise of stock options																	705			$ 705
Common shares issued upon vesting of restricted stock units (in shares)																130,603
Share-based compensation expense																	2,237			2,237
Net unrealized gain on short-term investments																			$ 15	15
Net loss for the period																		(12,580)		(12,580)
Net loss																		(12,580)		(12,580)
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 stock options (in shares)																915,404				915,404
Common shares issued upon exercise of stock options																	1,678			$ 1,678
Common shares issued upon vesting of restricted stock units (in shares)																524,491
Share-based compensation expense																	5,356			5,356
Net unrealized gain on short-term investments																				(21)
Net loss for the period																		(24,449)		(24,449)
Common shares issued upon exercise of warrants (in shares)										1,661,320			153,692
Common shares issued upon exercise of warrants											$ 10,798	$ 10,798		$ 1,249	$ 1,249
Common shares issued for services (in shares)																42,876
Common shares issued for services																	239			239
Net unrealized loss on short-term investments																			(21)	(21)
Net loss																		(24,449)		(24,449)
Balance (in shares) at Dec. 31, 2021																40,851,945
Balance at Dec. 31, 2021																$ 4	$ 91,025	$ (49,759)	$ (6)	$ 41,264