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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Operating activities    
Net income (loss) $ 8,617 $ (1,312)
Depreciation 549 898
Amortization of intangible assets 139 1,102
Amortization of right-of-use assets 351 403
Amortization of debt issuance cost 28 67
Deferred income tax benefit (318) (414)
Change in receivable reserves 2,840 (374)
Change in inventory reserves 120 288
Inventory write-off from flood damage 2,688  
Gain on sale of subsidiaries (21,417)  
Unrealized loss on short term investments 2,180  
Accrued pension 114 (6)
Stock-based compensation 10 160
Other   14
Foreign currency remeasurement loss (186) 85
Changes in current operating assets and liabilities:    
Accounts receivable 1,942 (455)
Inventories (1,599) (3,558)
Prepaid expenses and other assets 408 (509)
Income taxes 1,444 42
Accounts payable and accrued liabilities (291) 4,947
Customer deposits and deferred revenue 338 (811)
Net cash (used in)/provided by operating activities (2,043) 567
Investing activities    
Additions to property, plant and equipment (148) (369)
Proceeds from sale of subsidiaries, net 41,925  
Net cash provided by/(used in) investing activities 41,777 (369)
Financing activities    
Bank overdrafts (1,677) 1,593
Short term borrowings   (2,260)
Borrowing under debt agreement 15,329 31,696
Repayment of debt (40,081) (30,462)
Payment of debt issuance cost   (24)
Write-off of notes receivable 600  
Principal repayments of financing leases (632) (376)
Net cash (used in)/provided by financing activities (26,461) 167
Increase in cash and cash equivalents 13,273 365
Effect of foreign exchange on cash and cash equivalents 36 76
Cash and cash equivalents    
Beginning of period 200 218
End of period 13,509 659
Supplemental cash flow information:    
Interest paid 1,258 2,040
Income taxes paid, net of refunds 132 $ 402
Non-cash investing and financing activities:    
Declared dividend unpaid 11,955  
Securities received for sale of subsidiary 4,207  
Notes received for sale of subsidiary $ 6,558