CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities
Net loss	$ (1,269,000)	$ (858,000)
Adjustment to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	79,000	92,000
Amortization of right of use assets	91,000	105,000
(Gain) loss on foreign currency remeasurement	(52,000)	8,000
Amortization of stock options		38,000
Allowance for credit losses	12,000	112,000
Changes in operating assets and liabilities:
Accounts receivable	142,000	(263,000)
Inventories	281,000	508,000
Prepaids and other assets	(220,000)	21,000
Accounts payable	475,000	423,000
Accrued liabilities	175,000	57,000
Operating lease liabilities	(85,000)	(109,000)
Customer deposits	237,000	(194,000)
Deferred pension liability and other	51,000	61,000
Net cash (used in) provided by operating activities	(83,000)	1,000
Cash flows from investing activities
Purchases of property, plant and equipment	(2,000)
Net cash used in investing activities	(2,000)
Cash flows from financing activities
Payments of long-term debt	(2,000)
Net cash used in financing activities	(2,000)
Effect of exchange rate changes	(2,000)	1,000
Net increase (decrease) in cash, cash equivalents and restricted cash	(89,000)	2,000
Cash, cash equivalents and restricted cash at beginning of year	385,000	48,000
Cash, cash equivalents and restricted cash at end of period	296,000	50,000
Supplemental disclosure of cash flow information:
Interest paid
Income taxes paid	6,000	10,000
Current assets
Cash and cash equivalents	96,000	50,000
Long-term assets
Restricted cash	200,000
Cash, cash equivalents and restricted cash at end of period	$ 296,000	$ 50,000