Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Cash flows related to operating activities:
Loss from continuing operations	$ (1,512,000)	$ (3,547,000)
Adjustments to reconcile loss from continuing operations to net cash provided by (used in) operating activities:
Depreciation and amortization	990,000	1,083,000
Stock based compensation	288,000	120,000
Allowance for (recovery of) credit losses	(106,000)	5,000
Inventory reserve	171,000	(15,000)
Warranty reserve	(209,000)	(39,000)
Deferred income taxes	0	1,072,000
Loss on sale of equipment	18,000	0
Change in assets and liabilities:
Accounts receivable	2,883,000	(3,617,000)
Inventories	(1,799,000)	103,000
Prepaid and other current assets	533,000	(909,000)
Accounts payable	352,000	221,000
Accrued employee compensation and benefit costs	(298,000)	(54,000)
Post retirement obligations	165,000	148,000
Other long-term liabilities	460,000	0
Employee stock ownership trust commitment	56,000	101,000
Accrued income taxes	7,000	0
Other accrued liabilities	(746,000)	1,513,000
Net cash provided by (used in) operating activities from continuing operations	1,253,000	(3,815,000)
Cash flows related to investing activities:
Purchase of property, plant and equipment	(1,038,000)	(689,000)
Disposal of property, plant and equipment	3,000	0
Net cash used in investing activities from continuing operations	(1,035,000)	(689,000)
Cash flows related to financing activities:
Advances on line of credit, net of payments	24,000	2,103,000
Principal payments on equipment financing lease obligations	0	(501,000)
Purchase of treasury shares	(41,000)	0
Net cash (used in) provided by financing activities from continuing operations	(17,000)	1,602,000
Discontinued Operation
Cash used in operating activities	(185,000)	(2,823,000)
Cash provided by investing activities	0	2,158,000
Net cash used in operating and investing activities from discontinued operation	(185,000)	(665,000)
Net increase (decrease) in cash and restricted cash	16,000	(3,567,000)
Cash and restricted cash at beginning of year	245,000	3,812,000
Cash and restricted cash at end of year	$ 261,000	$ 245,000