CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net loss	$ (1,554)	$ (2,928)
Adjustments to reconcile net loss to net cash provided by operating activities:
Share-based compensation	64	90
Depreciation and amortization	605	682
Gain on sale of property, plant and equipment	(4)	(40)
Bad debt expense (recovery)	1	(9)
Non-cash lease expense	723	398
Loss on right-of-use operating lease asset impairment	0	820
Changes in operating assets and liabilities:
Accounts receivable	(982)	3,018
Contract assets	(199)	71
Inventories	(228)	52
Prepaid expenses and other current assets	(155)	(103)
Other assets	(83)	(98)
Accounts payable and accrued expenses	971	(794)
Contract liabilities	1,044	83
Net cash provided by operating activities	203	1,242
Cash flows from investing activities:
Proceeds from sale of property, plant and equipment	4	271
Purchases of property, plant and equipment	(230)	(2,537)
Payments received on note receivable	0	4
Net cash used in investing activities	(226)	(2,262)
Cash flows from financing activities:
Repurchase of common shares	0	(250)
Principal payments under finance lease obligations	(300)	(53)
Net cash used in financing activities	(300)	(303)
Change in cash	(323)	(1,323)
Cash, beginning of year	2,353	3,676
Cash, end of year	2,030	2,353
Supplemental schedule of non-cash investing and financing activities:
Shares of common stock received in exchange for property, plant and equipment	$ 0	$ 76