CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities:
Net loss	$ (673)	$ (1,666)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Share-based compensation	49	71
Depreciation and amortization	461	530
Gain on sale of property, plant and equipment	(2)	(41)
Bad debt expense (recovery)	1	(133)
Non-cash lease expense (benefit)	(186)	144
Changes in operating assets and liabilities:
Accounts receivable, net	(2,601)	3,787
Contract assets	145	(66)
Inventories	30	51
Prepaid expenses and other current assets	(274)	(186)
Other assets, net	(83)	(91)
Accounts payable and accrued expenses	985	(119)
Contract liabilities	1,415	(204)
Net cash provided by (used in) operating activities	(733)	2,077
Cash flows from investing activities:
Proceeds from sale of property, plant and equipment	2	258
Purchases of property, plant and equipment	(230)	(2,223)
Payments received on note receivable	0	4
Net cash used in investing activities	(228)	(1,961)
Cash flows from financing activities:
Principal payments under finance lease obligations	(260)	0
Repurchase of common shares	0	(250)
Net cash used in financing activities	(260)	(250)
Change in cash	(1,221)	(134)
Cash, beginning of period	2,353	3,676
Cash, end of period	1,132	3,542
Supplemental schedule of non-cash investing and financing activities:
Shares of common stock received in exchange for property, plant and equipment	$ 0	$ 76