CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net income (loss)	$ (530)	$ (87)
Adjustments to reconcile net loss to net cash provided by operating activities:
Share-based compensation	40	71
Depreciation and amortization	306	369
Gain on sale of property, plant and equipment	(2)	(188)
Bad debt expense (recovery)	1	(133)
Non-cash lease expense (benefit)	485	(8)
Changes in operating assets and liabilities:
Accounts receivable, net	(741)	1,346
Contract assets	227	345
Inventories	7	(13)
Prepaid expenses and other current assets	(151)	(149)
Other assets, net	(71)	(44)
Accounts payable and accrued expenses	59	(585)
Contract liabilities	608	(144)
Net provided by operating activities	238	780
Cash flows from investing activities:
Proceeds from sale of property, plant and equipment	2	184
Purchases of property, plant and equipment	(82)	(955)
Payments received on note receivable	0	4
Net cash used in investing activities	(80)	(767)
Cash flows from financing activities:
Principal payments under finance lease obligations	(164)	0
Repurchase of common shares		(250)
Net cash used in financing activities	(164)	(250)
Change in cash	(6)	(237)
Cash, beginning of period	2,353	3,676
Cash, end of period	2,347	3,439
Supplemental schedule of non-cash investing and financing activities:
Shares of common stock received in exchange for property, plant and equipment	$ 0	$ 76