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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Operating activities    
Net (loss) income $ (2,921) $ 5,647
Depreciation 58 205
Amortization of intangible assets   54
Amortization of right-of-use assets 219 213
Amortization of debt issuance cost   8
Interest income on notes receivable (111)  
Deferred income tax expense   1,577
Change in receivable reserves 29 (74)
Change in inventory reserves (231) 32
Gain on sale of subsidiaries   (4,207)
Change in long term payables (92)  
Change in insurance receivable 1,449  
Unrealized loss (gain) on investments 1,143 (3,341)
Accrued pension   (30)
Stock-based compensation 2 5
Foreign currency remeasurement loss 10  
Changes in current operating assets and liabilities:    
Accounts receivable 276 (885)
Inventories 132 (238)
Prepaid expenses and other assets (2) (120)
Income taxes (481) 12
Accounts payable and accrued liabilities (820) 968
Customer deposits and deferred revenue 304 1,045
Net cash (used in)/provided by operating activities (1,036) 871
Investing activities    
Additions to property, plant and equipment   (56)
Net cash used in investing activities 0 (56)
Financing activities    
Bank overdrafts (205) (1,294)
Short term borrowings   1,785
Borrowing under debt agreement   5,259
Repayment of debt   (6,403)
Principal repayments of financing leases (214) (128)
Net cash used in financing activities (419) (781)
(Decrease) increase in cash and cash equivalents (1,455) 34
Effect of foreign exchange on cash and cash equivalents   (70)
Cash and cash equivalents    
Beginning of period 8,213 211
End of period 6,758 175
Supplemental cash flow information:    
Interest paid   2,603
Income taxes paid, net of refunds $ 477 $ 587