CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities
Net loss	$ (4,048,000)	$ (2,632,000)
Adjustment to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	744,000	1,007,000
Amortization of gain on sale/leaseback transaction	(11,000)	(99,000)
Amortization of deferred financing fees and debt discount	155,000	89,000
(Gain) loss on foreign currency remeasurement	(74,000)	192,000
Bad debt expense	1,517,000	33,000
Changes in operating assets and liabilities:
Accounts receivable, net	31,000	427,000
Inventories	209,000	(494,000)
Prepaids and other assets	1,168,000	(2,132,000)
Accounts payable	1,072,000	1,222,000
Accrued liabilities	339,000	778,000
Customer deposits	(468,000)	1,595,000
Deferred pension liability and other	(200,000)	(280,000)
Net cash provided by (used in) operating activities	434,000	(294,000)
Cash flows from investing activities
Purchases of property, plant and equipment	(135,000)	(210,000)
Net cash used in investing activities	(135,000)	(210,000)
Cash flows from financing activities
Proceeds from long-term debt	1,000,000	2,100,000
Proceeds from forgivable loan		650,000
Payments of long-term debt	(1,939,000)	(1,680,000)
Payments of dividends on preferred stock		(99,000)
Payments for deferred financing fees	(22,000)	(30,000)
Net cash (used in) provided by financing activities	(961,000)	941,000
Effect of exchange rate changes	(1,000)	10,000
Net (decrease) increase in cash, cash equivalents and restricted cash	(663,000)	447,000
Cash, cash equivalents and restricted cash at beginning of year	1,909,000	1,218,000
Cash, cash equivalents and restricted cash at end of period	1,246,000	1,665,000
Supplemental disclosure of cash flow information:
Interest paid	408,000	355,000
Income taxes paid	26,000	23,000
Supplemental non-cash financing activities:
Warrants issued to SMI and SMII	287,000
Current assets
Cash and cash equivalents	296,000	503,000
Long-term assets
Restricted cash	950,000	1,162,000
Cash, cash equivalents and restricted cash at end of period	$ 1,246,000	$ 1,665,000