Consolidated Statements of Cash Flows - USD ($)
3 Months Ended
Feb. 29, 2020
Feb. 28, 2019
Statement of Cash Flows [Abstract]    
Net loss $ (1,747,373) $ (3,224,449)
Items not affecting cash    
Depreciation (Note 4) 102,699 126,165
Stock-based compensation (Note 7) 53,749 2,274
Accreted interest on convertible debenture (Note 5) 514,437 7,937
Change in non-cash operating assets & liabilities    
Accounts receivable (87,035) 24,084
Investment tax credits 0 (45,000)
Prepaid expenses, sundry and other assets (15,696) (31,683)
Inventory 102,375 31,723
Accounts payable, accrued liabilities and employee costs payable 1,018,274 (358,923)
Deferred revenue 0 (75,000)
Cash flows used in operating activities (58,570) (3,542,872)
Financing activities    
Repayment of 2013 Debenture (Note 5) 0 (300,000)
Proceeds from issuance of shares on exercise of 2018 Pre-Funded Warrants (Note 9) 0 26,454
Cash flows provided from financing activities 0 (273,546)
Investing activity    
Purchase of property and equipment (Note 4) 0 (3,790)
Cash flows used in investing activities 0 (3,790)
Decrease in cash (58,570) (3,820,208)
Cash, beginning of period 64,622 6,641,877
Cash, end of period 6,052 2,821,669
Supplemental cash flow information    
Interest paid 0 63,836
Taxes paid $ 0 $ 0