CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities
Net loss	$ (1,131,000)	$ (3,230,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Bad debt expense	25,000	0
Depreciation and amortization	2,191,000	2,297,000
Share-based compensation expense	116,000	357,000
Gain on sale of assets	(27,000)	0
Gain from insurance proceeds	0	(399,000)
Deferred income taxes	0	70,000
Amortization of loan fees included in interest expense	123,900	130,100
Change in assets and liabilities
Receivables	(884,000)	(1,692,000)
Receivables from related parties	58,000	58,000
Inventories	(1,669,000)	(1,027,000)
Income tax receivable/payable	16,000	0
Prepaid expenses and other assets	(95,000)	80,000
Accounts payable	179,000	(547,000)
Payables and accrued expenses to related parties	(405,000)	160,000
Other current liabilities	138,000	433,000
Net cash used in operating activities	(1,364,000)	(3,310,000)
Cash flows from investing activities
Proceeds from insurance claim	0	479,000
Proceeds from sale of property and equipment	28,000	0
Purchases of property and equipment	(132,000)	(8,000)
Net cash (used in) from investing activities	(104,000)	471,000
Cash flows from financing activities
Loan fees capitalized	(125,000)	(241,000)
Change in bank overdrafts	69,000	79,000
Payments on long-term debt	0	(20,000)
Payments on long-term debt, related parties	(33,000)	0
Payments on capital lease obligations	(204,000)	(37,000)
Proceeds from revolving line of credit, net	2,076,000	2,942,000
Net cash from financing activities	1,783,000	2,723,000
Cash flows from discontinued operations
Net change in cash and cash equivalents	315,000	(116,000)
Cash and cash equivalents at beginning of year	526,000	642,000
Cash and cash equivalents at end of year	841,000	526,000
Supplemental disclosure of cash flow information:
Cash paid for interest	755,000	300,000
Tax refunds received	5,000	5,000
Cash paid for income taxes	2,000	15,000
Supplemental disclosure of noncash investing and financing activities:
Equipment financed by related party debt	129,000	0
Equipment additions financed by capital lease obligations	75,000	1,285,000
Conversion of related party payables to long-term debt, related parties	$ 0	$ 1,504,000