CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities:
Net income (loss)	$ 576	$ (97)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Share-based compensation	19	24
Depreciation and amortization	144	152
Gain on sale of property, plant and equipment	0	(1)
Non-cash lease expense	21	263
Changes in operating assets and liabilities:
Accounts receivable, net	348	(1,384)
Contract assets	(1,543)	(66)
Inventories	(95)	1
Prepaid expenses and other current assets	(54)	32
Other assets, net	0	(8)
Accounts payable and accrued expenses	(79)	(381)
Contract liabilities	356	791
Net cash used in operating activities	(307)	(674)
Cash flows from investing activities:
Proceeds from sale of property, plant and equipment	0	1
Purchases of property, plant and equipment	(10)	(79)
Net cash used in investing activities	(10)	(78)
Cash flows from financing activities:
Principal payments under finance lease obligations	(18)	(82)
Proceeds from short-term borrowings	305	0
Principal payments on short-term borrowings	(22)	0
Net cash provided by (used in) financing activities	265	(82)
Change in cash	(52)	(834)
Cash, beginning of period	2,030	2,353
Cash, end of period	$ 1,978	$ 1,519