CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities
Net loss	$ (2,396,000)	$ (888,000)
Adjustment to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	278,000	320,000
Amortization of right of use assets	145,000	182,000
Amortization of deferred financing fees and debt discount	42,000	71,000
Loss on disposal of assets	5,000
Loss on extinguishment of debt		193,000
(Gain) loss on foreign currency remeasurement	(113,000)	107,000
Issuance of warrants	94,000
Bad debt expense	46,000	162,000
Changes in operating assets and liabilities:
Accounts receivable, net	581,000	(445,000)
Inventories	29,000	(332,000)
Prepaids and other assets	(141,000)	(370,000)
Accounts payable	174,000	(2,975,000)
Accrued liabilities	(96,000)	(481,000)
Operating lease liabilities	(145,000)	(179,000)
Customer deposits	292,000	378,000
Deferred pension liability and other	(269,000)	417,000
Net cash used in operating activities	(1,474,000)	(3,840,000)
Cash flows from investing activities
Equipment manufactured for rental	(16,000)
Purchases of property, plant and equipment	(178,000)	(25,000)
Net cash used in investing activities	(194,000)	(25,000)
Cash flows from financing activities
Proceeds from long-term debt	1,184,000
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		(3,037,000)
Payments of dividends on preferred stock		(73,000)
Payments for fees on extinguishment of debt		(62,000)
Net cash provided by financing activities	1,184,000	4,554,000
Effect of exchange rate changes	(3,000)	1,000
Net (decrease) increase in cash, cash equivalents and restricted cash	(487,000)	690,000
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	898,000	2,313,000
Supplemental disclosure of cash flow information:
Interest paid	151,000	267,000
Income taxes paid	15,000	22,000
Supplemental non-cash financing activities:
Preferred Stock Series B converted to Common Stock		3,172,000
Current assets
Cash and cash equivalents	248,000	1,413,000
Long-term assets
Restricted cash	650,000	900,000
Cash, cash equivalents and restricted cash at end of period	$ 898,000	$ 2,313,000