Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net loss (including noncontrolling interests)	$ (6,282)	$ (5,802)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	77
Bad debt expense		105
Write-off of prepaids		414
Depreciation and amortization	767	855
Amortization of operating lease right-of-use assets	405	404
Loss on disposal of property and equipment	5
Changes in operating assets and liabilities:
Accounts receivable and unbilled revenue, net	(394)	397
Projects in process	8	(8)
Inventory	(91)	124
Prepaid expenses and other current assets	(375)	(19)
Accounts payable and accrued expenses	444	454
Deferred revenues	64	(429)
Operating lease obligations	(380)	(12)
Net cash used in operating activities	(5,752)	(3,517)
Cash flows from investing activities:
Purchase of property and equipment	(60)	(89)
Sale of investment in joint venture	2
Net cash used in investing activities	(58)	(89)
Cash flow from financing activities:
Proceeds from issuance of common stock and warrants, net of offering costs		36
Proceeds from issuance of preferred and common stock, net of offering costs	13,530
Preferred dividends	(33)
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	(321)	(535)
Net cash provided by (used in) financing activities	13,611	(499)
Effect of exchange rate changes on cash	315	(93)
Net change in cash	8,116	(4,198)
Cash at beginning of year	2,357	6,555
Cash at end of year	10,473	2,357
Supplemental disclosure of cash flow information:
Cash paid for interest	27	34
Cash paid for income taxes	59	38
Supplemental disclosure of non-cash investing and financing activities:
Short-term borrowings and accrued interest settled for Series C-2 Preferred Stock	516
Right-of-use asset obtained in exchange for lease obligations	$ 864