Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Statement of Cash Flows [Abstract]
Net loss (including noncontrolling interests)	$ (4,128)	$ (5,362)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	89	91
Depreciation and amortization	104	530
Amortization of operating lease right-of-use assets	327	386
Recoveries of bad debt	(45)
Changes in operating assets and liabilities:
Accounts receivable and unbilled revenue, net	294	970
Inventory	(1,691)	(1,249)
Prepaid expenses and other current assets	45	524
Accounts payable and accrued expenses	(386)	(371)
Deferred revenues	(6)	(1)
Operating lease obligations	(297)	(492)
Net cash used in operating activities	(5,694)	(4,974)
Cash flows from investing activities:
Purchase of property and equipment	(54)	(67)
Net cash used in investing activities	(54)	(67)
Cash flows from financing activities:
Proceeds from issuance of common stock, net of offering costs		593
Repurchase of common stock	(12)
Principal payments on finance lease obligations	(135)	(426)
Net cash (used in) provided by financing activities	(147)	167
Effect of exchange rate changes on cash	(186)	(103)
Net decrease in cash	(6,081)	(4,977)
Cash at beginning of period	17,383	10,473
Cash at end of period	11,302	5,496
Supplemental disclosure of cash flow information:
Cash paid for income taxes	2	104
Cash paid for interest	6	11
Supplemental disclosure of non-cash investing and financial activities:
Property and equipment obtained in exchange for finance lease obligations	$ 24