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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Operating activities    
Net loss $ (769) $ (2,242)
Depreciation 110 164
Amortization of right-of-use assets 219 196
Amortization of imputed interest (321) (341)
Interest expense from PPP Loan 4 6
Non-cash cost of operating leases 421 320
Change in receivable reserves 68 (61)
Change in inventory reserves 61 258
Change in long term payables (102)
Proceeds from insurance receivable 95 1,767
Loss on investments (968)
Stock-based compensation 129 3
Payroll tax deferral 139
Changes in current operating assets and liabilities:    
Accounts receivable (758) 1,412
Inventories (1,158) 313
Prepaid expenses and other assets 247 48
Income taxes 401 (512)
Accounts payable and accrued liabilities 541 (2,599)
Deferred revenue 1,549 871
Net cash provided by/ (used in) operating activities 839 (1,328)
Investing activities    
Additions to property, plant and equipment (156)
Proceeds from sale of investments 2,436
Change in notes receivable 194
Net cash (used in) / provided by investing activities (156) 2,630
Financing activities    
Bank overdrafts (374)
Funding from PPP Loan 1,404
Payment of deferred purchase price (397)
Dividend paid to shareholders (1,047)
Gain on forgiveness of PPP Loan (1,417)
Principal repayments of financing leases (639) (517)
Net cash (used in) / provided by financing activities (3,103) 116
(Decrease) / increase in cash and restricted cash (2,420) 1,418
Cash, and restricted cash, beginning of year 7,567 8,213
Cash, and restricted cash, end of period 5,147 9,631
Non-cash investing and financing activities:    
Acquisition of right-of-use assets $ 1,418