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Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Cash flows from operating activities:    
Net income (loss) $ 60 $ (94)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Depreciation and amortization 216 165
Stock based compensation 26 55
Amortization of right-of-use assets 154 143
Changes in operating assets and liabilities:    
Accounts receivable (194) (140)
Inventories (36) (105)
Prepaid expenses and other current assets (167) 102
Other assets (2) 1
Accounts payable 14 (120)
Accrued liabilities 68 34
Accrued income taxes 105 121
Deferred taxes (46) 55
Lease liabilities (143) (143)
Deferred revenue (13)  
Net cash provided by operating activities 42 74
Cash flows from investing activities:    
Property, plant and equipment   (118)
Share repurchase   (6)
Intangible assets (66) (65)
Net cash used in investing activities (66) (189)
Cash flows from financing activities:    
Proceeds from PPP loan 186  
Net cash provided by financing activities 186  
Effect of exchange rate changes on cash, cash equivalents and restricted cash 49 (49)
Net increase (decrease) in cash and cash equivalents 211 (164)
Cash, cash equivalents and restricted cash, beginning of period 5,844 6,107
Cash, cash equivalents and restricted cash, end of period 6,055 5,943
Reconciliation of cash, cash equivalents and restricted cash, end of period:    
Cash, cash equivalents and restricted cash, end of period 6,055 5,943
Supplemental disclosure of cash flow information:    
Income taxes paid 30 188
Supplemental non-cash investing and financing activities:    
Lease liabilities arising from obtaining right-of-use assets $ 313 $ 418