CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities
Net loss	$ (4,301,000)	$ (1,286,000)
Adjustments to reconcile net loss to net cash from operating activities:
Depreciation	1,414,000	1,588,000
Inventory write-down	791,000	0
Impairment loss, property and equipment	637,000	0
Stock options	211,000	718,000
Gain on sale of property and equipment	(330,000)	(106,000)
Amortization of loan fees included in interest expense	30,000	43,000
Change in assets and liabilities
Receivables	4,995,000	1,385,000
Inventories	525,000	(3,288,000)
Other assets	(63,000)	(193,000)
Accounts payable	671,000	(1,146,000)
Other current liabilities	267,000	485,000
Net cash from (used in) operating activities	4,847,000	(1,800,000)
Cash flows from investing activities
Proceeds from sale of property and equipment	2,188,000	123,000
Purchases of property and equipment	(336,000)	(242,000)
Net cash from (used in) investing activities	1,852,000	(119,000)
Cash flows from financing activities
Payments on capital lease obligation	0	0
Loan fees capitalized	0	(245,000)
Proceeds from the sale of common stock and warrants, net	0	3,023,000
Change in bank overdrafts	(79,000)	(594,000)
Payments on current debt	(7,178,000)	(13,270,000)
Proceeds from current debt	90,000	12,157,000
Net cash used in (from) financing activities	(7,167,000)	1,071,000
Net decrease in cash	(468,000)	(848,000)
Cash and cash equivalents at beginning of year	1,059,000	1,589,000
Cash and cash equivalents at end of period	591,000	741,000
Supplemental disclosure of cash flow information:
Cash paid for interest	326,000	454,000
Supplemental disclosure of noncash investing and financing activities:
Increase (decrease) in equipment purchases accrual	$ (30,000)	$ 0