Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Statement of Cash Flows [Abstract]
Net loss (including noncontrolling interests)	$ (5,362)	$ (4,626)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	91
Depreciation and amortization	530	567
Amortization of operating lease right-of-use assets	386	289
Changes in operating assets and liabilities:
Accounts receivable and unbilled revenue, net	970	284
Projects in process		(3)
Inventory	(1,249)	(55)
Prepaid expenses and other current assets	524	(248)
Accounts payable and accrued expenses	(371)	310
Deferred revenues	(1)	73
Operating lease obligations	(492)	(298)
Net cash used in operating activities	(4,974)	(3,707)
Cash flows from investing activities:
Purchase of property and equipment	(67)	(17)
Net cash used in investing activities	(67)	(17)
Cash flows from financing activities:
Proceeds from issuance of preferred and common stock, net of offering costs	593	13,530
Proceeds from short term borrowings		966
Proceeds from short term tax credits		542
Payments on short term borrowings		(516)
Payments on short term tax credits		(557)
Principal payments on finance lease obligations	(426)	(185)
Payment of preferred dividend		(2)
Net cash provided by financing activities	167	13,778
Effect of exchange rate changes on cash	(103)	(199)
Net increase (decrease) in cash	(4,977)	9,855
Cash at beginning of period	10,473	2,357
Cash at end of period	5,496	12,212
Supplemental disclosure of cash flow information:
Cash paid for income taxes	104	10
Cash paid for interest	11	25
Supplemental disclosure of non-cash investing and financing activities:
Short-term borrowings and accrued interest settled for Series C-2 Preferred Stock		516
Accrual of dividends		31
Right-of-use asset obtained in exchange for lease obligation		$ 25