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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Cash flows from operating activities:    
Net loss $ (10,911,000) $ (10,227,000)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 1,116,000 1,436,000
Stock-based compensation 4,484,000 1,711,000
Change in fair value of warrant liability (8,102,008) (96,267)
Finance costs related to warrants   1,043,000
Accrued interest 721,000 325,000
Amortization of lease right-of-use assets 252,000 226,000
Change in operating lease liabilities (236,000) (248,000)
Amortization of debt discount 2,091,000 627,000
Other 27,000 7,000
Changes in assets and liabilities    
Accounts receivable (848,000) (4,029,000)
Inventories (1,418,000) (166,000)
Prepaid expenses and other assets 560,000 (513,000)
Tax credits and receivables (484,000) (416,000)
Accounts payable 804,000 (26,000)
Deferred revenue and other liabilities (72,000) 109,000
Net cash used in operating activities (12,016,000) (10,237,000)
Cash flows from investing activities:    
Purchases of property and equipment (71,000) (38,000)
Purchases of intangible assets (165,000)  
Proceeds from maturities of marketable securities and investments 400,000  
Cash acquired in business combination 6,464,000  
Net cash provided by (used in) investing activities 6,628,000 (38,000)
Cash flows from financing activities:    
Repayment of loans (785,000) (100,000)
Proceeds from exercise of stock options 37,000 8,000
Net proceeds from loan facility 1,262,000 573,000
Net proceeds from convertible debentures 9,055,000 3,452,000
Net cash provided by financing activities 9,569,000 10,083,000
Net increase (decrease) in cash and cash equivalents 4,181,000 (192,000)
Cash and cash equivalents at beginning of year 1,712,000 1,904,000
Cash and cash equivalents at end of year $ 5,893,000 1,712,000
Debtor-in-Possession    
Cash flows from financing activities:    
Net proceeds from loan facility   $ 6,150,000