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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Operating activities:    
Net loss $ (2,402) $ (5,666)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 88 32
Amortization of intangible assets 272 0
Vesting of employee restricted stock awards   2
Issuance of warrants to non-employees for services   13
Non-cash loss on modifications of common stock warrants 1,922 0
Unrealized gain on changes in fair value of warrant liabilities (4,470) (0)
Unrealized gain on changes in fair value of contingent liability (219) 0
Changes in operating assets and liabilities:    
Accounts receivable (465) 263
Inventory (848) (361)
Prepaid expenses and other current assets 234 (81)
Operating lease right-of-use assets (1,526) 266
Other asset (1) 0
Accounts payable and accrued liabilities 128 262
Operating lease liabilities 1,712 (307)
Net cash used in operating activities (5,445) (4,874)
Investing activities:    
Purchases of property and equipment (112) (44)
Net cash used in investing activities (112) (44)
Financing activities:    
Proceeds from exercise of warrants 1,703 0
Proceeds from common stock issuances, net   1,994
Payment on the line of credit (105)  
Net cash provided by financing activities 1,598 1,994
Net decrease in cash, cash equivalents, and restricted cash (3,959) (2,924)
Cash, cash equivalents and restricted cash, beginning of year 7,979 12,427
Cash, cash equivalents and restricted cash, end of period 4,020 9,503
Supplemental disclosure of cash flow information:    
Interest paid 12  
Adjustment of Series B Preferred Stock conversion price 5,657 0
Equity transferred to warrant liabilities 3,825 0
Addition of operating lease, right-of-use asset 2,039  
Reassessment of operating lease, right-of-use asset 164 0
Conversion of Series B Preferred Stock to common stock 110 0
Employees and Directors [Member] | Share-Based Payment Arrangement, Option [Member]    
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation expense for options and stock issued 130 523
Nonemployees [Member] | Share-Based Payment Arrangement, Option [Member]    
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation expense for options and stock issued   $ 180
The 2019 Preferred Warrant and 2019 Common Warrant Liability [Member]    
Supplemental disclosure of cash flow information:    
Warrant liability transferred to equity $ 7,502