Condensed Statements of Stockholders Equity - USD ($)	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Gain	Total
Beginning balance, shares at Dec. 31, 2019	29,829,916
Beginning balance, amount at Dec. 31, 2019	$ 3	$ 31,923	$ (12,730)	$ 0	$ 19,196
Common shares issued upon exercise of warrants at $3.00 per share, shares	11,783
Common shares issued upon exercise of warrants at $3.00 per share, amount	$ 0	35			35
Common shares issued upon exercise of warrants at $5.00 per share, shares	119,400
Common shares issued upon exercise of warrants at $5.00 per share, amount	$ 0	597			597
Common shares issued upon exercise of stock options, shares	112,625
Common shares issued upon exercise of stock options, amount	$ 0	169			169
Common shares issued for services, amount					0
Share-based compensation expense		467			467
Net unrealized gain on short-term investments					0
Net loss for the period			(2,346)		(2,346)
Ending balance, shares at Mar. 31, 2020	30,073,724
Ending balance, amount at Mar. 31, 2020	$ 3	33,191	(15,076)	0	18,118
Beginning balance, shares at Dec. 31, 2020	37,554,162
Beginning balance, amount at Dec. 31, 2020	$ 4	71,705	(25,310)	15	46,414
Common shares issued upon exercise of stock options, shares	75,000
Common shares issued upon exercise of stock options, amount	$ 0	113			113
Common shares issued upon vesting of restricted stock units, shares	64,660
Common shares issued upon vesting of restricted stock units, amount	$ 0				0
Common shares issued for services, shares	17,876
Common shares issued for services, amount	$ 0	100			100
Share-based compensation expense		859			859
Net unrealized gain on short-term investments				2	2
Net loss for the period			(5,429)		(5,429)
Ending balance, shares at Mar. 31, 2021	37,711,698
Ending balance, amount at Mar. 31, 2021	$ 4	$ 72,777	$ (30,739)	$ 17	$ 42,059