Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows related to operating activities:
Loss from continuing operations	$ (251,000)	$ (3,926,000)
Adjustments to reconcile loss from continuing operations to net cash provided (used) by operating activities:
Depreciation and amortization	768,000	790,000
Stock based compensation	185,000	111,000
Allowance for credit losses	(90,000)	8,000
Inventory reserve	108,000	34,000
Warranty reserve	(129,000)	(37,000)
Deferred income taxes	0	1,077,000
Changes in assets and liabilities providing (using) cash:
Accounts receivable	(443,000)	(3,852,000)
Inventories	(1,318,000)	(796,000)
Prepaid and other current assets	697,000	(251,000)
Accounts payable	893,000	1,118,000
Accrued employee compensation and benefit costs	(18,000)	229,000
Other accrued liabilities	(863,000)	528,000
Post-retirement obligations	45,000	59,000
Other long-term liabilities	427,000	0
Net cash provided (used) by operating activities from continuing operations	11,000	(4,908,000)
Cash flows related to investing activities:
Purchase of property, plant and equipment, net of disposals	(933,000)	(606,000)
Net cash used by investing activities from continuing operations	(933,000)	(606,000)
Cash flows related to financing activities:
Proceeds from line of credit, net of payments	1,066,000	2,164,000
Purchase of treasury shares	(21,000)	0
Payments on finance lease obligations	0	(501,000)
Net cash provided by financing activities from continuing operations	1,045,000	1,663,000
Discontinued Operation
Cash used by operating activities	(172,000)	(1,753,000)
Cash provided by investing activities	0	2,100,000
Net cash (used) provided by discontinued operation	(172,000)	347,000
Net decrease in cash and restricted cash	(49,000)	(3,504,000)
Cash and restricted cash at beginning of period	245,000	3,812,000
Cash and restricted cash at end of period	$ 196,000	$ 308,000