Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities:
Net loss (including noncontrolling interests)	$ (1,425)	$ (1,437)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	18	39
Depreciation and amortization	17	45
Amortization of operating lease right-of-use assets	16	114
Changes in operating assets and liabilities:
Accounts receivable and unbilled revenue, net	(491)	146
Inventory	(11)	(1,121)
Prepaid expenses and other current assets	66	98
Accounts payable, accrued payroll and employee benefits, and accrued expenses	133	22
Contract liabilities	(5)	(1)
Operating lease obligations	(16)	(184)
Net cash used in operating activities	(1,698)	(2,279)
Cash flows from investing activities:
Purchase of property and equipment		(5)
Net cash used in investing activities		(5)
Cash flows from financing activities:
Proceeds from issuance of common stock, net of offering costs	7,866
Principal payments on finance lease obligations	(28)	(61)
Net cash provided by (used in) financing activities	7,838	(61)
Effect of exchange rate changes on cash	25	88
Net change in cash	6,165	(2,257)
Cash at beginning of period	14,816	17,383
Cash at end of period	20,981	15,126
Supplemental disclosure of cash flow information:
Cash paid for income taxes	11	44
Cash paid for interest	$ 2	$ 2