XML 65 R52.htm IDEA: XBRL DOCUMENT v3.21.2
Stockholders' Equity - Summary of Information Concerning Outstanding and Exercisable Stock Options (Details)
6 Months Ended
Jun. 30, 2021
$ / shares
shares
Jun. 30, 2021
$ / shares
shares
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]    
Number of outstanding (in shares) 8,040,750 8,040,750
Number of exercisable (in shares) 3,396,946 3,396,946
Range 1 [Member]    
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]    
Range of exercise prices per share (in dollars per share) | $ / shares   $ 0.45
Number of outstanding (in shares) 2,645,000 2,645,000
Number of exercisable (in shares) 147,896 147,896
Expiry date Jun. 30, 2025  
Range 2 [Member]    
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]    
Range of exercise prices per share (in dollars per share) | $ / shares   $ 0.50
Number of outstanding (in shares) 1,031,600 1,031,600
Number of exercisable (in shares) 131,600 131,600
Expiry date Feb. 01, 2026  
Range 3 [Member]    
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]    
Range of exercise prices per share (in dollars per share) | $ / shares   $ 0.54
Number of outstanding (in shares) 570,000 570,000
Number of exercisable (in shares) 570,000 570,000
Expiry date Dec. 20, 2021  
Range 4 [Member]    
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]    
Range of exercise prices per share (in dollars per share) | $ / shares   $ 0.54
Number of outstanding (in shares) 506,150 506,150
Number of exercisable (in shares) 481,450 481,450
Expiry date Nov. 08, 2022  
Range 5 [Member]    
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]    
Range of exercise prices per share (in dollars per share) | $ / shares   $ 0.54
Number of outstanding (in shares) 713,000 713,000
Number of exercisable (in shares) 713,000 713,000
Expiry date Jun. 04, 2023  
Range 6 [Member]    
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]    
Range of exercise prices per share (in dollars per share) | $ / shares $ 0.50  
Number of outstanding (in shares) 1,275,000 1,275,000
Number of exercisable (in shares) 1,275,000 1,275,000
Expiry date Jun. 04, 2023  
Range 7 [Member]    
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]    
Range of exercise prices per share (in dollars per share) | $ / shares   $ 1.02
Number of outstanding (in shares) 1,300,000 1,300,000
Number of exercisable (in shares) 78,000 78,000
Expiry date Apr. 06, 2026