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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Cash flows from operating activities:    
Net loss (including noncontrolling interests) $ (1,670) $ (1,112)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock based compensation expense 23
Depreciation and amortization 199 195
Amortization of operating lease right-of-use assets 129 91
Changes in operating assets and liabilities:    
Accounts receivable and unbilled revenue, net 405 188
Projects in process (51)
Inventory (493) (16)
Prepaid expenses and other current assets 299 45
Accounts payable and accrued expenses (657) (224)
Deferred revenues (15) 6
Operating lease obligations (210) (91)
Net cash used in operating activities (1,990) (969)
Cash flows from investing activities:    
Purchase of property and equipment (62) (5)
Net cash used in investing activities (62) (5)
Cash flows from financing activities:    
Principal payments on finance lease obligations (148) (132)
Net cash used in financing activities (148) (132)
Effect of exchange rate changes on cash (128) (64)
Net decrease in cash (2,328) (1,170)
Cash at beginning of period 10,473 2,357
Cash at end of period 8,145 1,187
Supplemental disclosure of cash flow information:    
Cash paid for income taxes 36 16
Cash paid for interest $ 5 $ 7