Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows related to operating activities:
Income (loss) from continuing operations	$ 202,000	$ (4,108,000)
Adjustments to reconcile income (loss) from continuing operations to net cash provided (used) by operating activities:
Depreciation and amortization	543,000	517,000
Stock based compensation	176,000	74,000
Allowance for credit losses	(18,000)	(25,000)
Inventory reserve	139,000	14,000
Warranty reserve	(93,000)	(2,000)
Deferred income taxes	0	1,072,000
Changes in assets and liabilities providing (using) cash:
Accounts receivable	1,377,000	(2,663,000)
Inventories	(1,771,000)	(826,000)
Prepaid and other current assets	562,000	(520,000)
Accounts payable	371,000	1,064,000
Accrued employee compensation and benefit costs	25,000	301,000
Post retirement obligations	37,000	66,000
Other accrued liabilities	(82,000)	(105,000)
Net cash provided (used) by operating activities from continuing operations	1,468,000	(5,141,000)
Cash flows related to investing activities:
Purchase of property, plant and equipment	(647,000)	(403,000)
Net cash used by investing activities from continuing operations	(647,000)	(403,000)
Cash flows related to financing activities:
(Payments on) proceeds from line of credit	(630,000)	3,697,000
Purchase of treasury shares	(21,000)	0
Principal payments on finance lease obligations	0	(501,000)
Net cash (used) provided by financing activities from continuing operations	(651,000)	3,196,000
Discontinued Operation
Cash used by operating activities	(146,000)	(568,000)
Net cash used by operating activities from discontinued operation	(146,000)	(568,000)
Net increase (decrease) in cash and restricted cash	24,000	(2,916,000)
Cash and restricted cash at beginning of period	245,000	3,812,000
Cash and restricted cash at end of period	$ 269,000	$ 896,000