CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities
Net loss	$ (3,154,000)	$ (1,165,000)
Adjustment to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	409,000	480,000
Amortization of right of use assets	213,000	276,000
Amortization of deferred financing fees and debt discount	65,000	74,000
Loss on disposal of assets	5,000
(Gain) loss on extinguishment of debt	(137,000)	193,000
(Gain) loss on foreign currency remeasurement	(64,000)	78,000
Issuance of warrants	94,000
Bad debt expense	87,000	147,000
Changes in operating assets and liabilities:
Accounts receivable, net	685,000	(673,000)
Inventories	274,000	(535,000)
Prepaids and other assets	(82,000)	(794,000)
Accounts payable	(164,000)	(2,661,000)
Accrued liabilities	233,000	(642,000)
Operating lease liabilities	(213,000)	(272,000)
Customer deposits	197,000	457,000
Deferred pension liability and other	(417,000)	282,000
Net cash used in operating activities	(1,969,000)	(4,755,000)
Cash flows from investing activities
Equipment manufactured for rental	(17,000)	(26,000)
Purchases of property, plant and equipment	(173,000)	(85,000)
Net cash used in investing activities	(190,000)	(111,000)
Cash flows from financing activities
Proceeds from long-term debt	1,497,000
Proceeds from warrant exercise, net of costs		5,298,000
Proceeds from rights offering, net of costs		2,428,000
Payments of long-term debt	(650,000)	(3,037,000)
Payments of dividends on preferred stock		(80,000)
Payments for deferred financing fees	(40,000)
Payments for fees on extinguishment of debt		(62,000)
Net cash provided by financing activities	807,000	4,547,000
Effect of exchange rate changes	(2,000)	(6,000)
Net decrease in cash, cash equivalents and restricted cash	(1,354,000)	(325,000)
Cash, cash equivalents and restricted cash at beginning of year	1,385,000	1,623,000
Cash, cash equivalents and restricted cash at end of period	31,000	1,298,000
Supplemental disclosure of cash flow information:
Interest paid	202,000	267,000
Income taxes paid	15,000	22,000
Supplemental non-cash financing activities:
Preferred Stock Series B converted to Common Stock		3,302,000
Current assets
Cash and cash equivalents	31,000	398,000
Long-term assets
Restricted cash		900,000
Cash, cash equivalents and restricted cash at end of period	31,000	1,298,000
Unilumin [Member]
Supplemental non-cash financing activities:
Warrants issued to Unilumin	$ 94,000