STATEMENTS OF CASH FLOWS (Unaudited) (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash flows from operating activities:
Net loss	$ (4,002,000)	$ (3,157,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Reserve for doubtful accounts	196,000	53,000
Inventory reserve	893,000	204,000
Depreciation and amortization	283,000	253,000
Loss on asset disposal		49,000
Loss on asset impairment	68,000
Issuance of common stock for employee services
Stock option expense	166,000	208,000
Accounts receivable	(151,000)	42,000
Inventory and supplies	67,000	(254,000)
Prepaid expenses and other current assets	39,000	271,000
Long term receivables	6,000	(45,000)
Accounts payable	92,000	(1,435,000)
Deferred revenues	(198,000)	67,000
Accrued payroll and related expense	(248,000)	(329,000)
Other accrued liabilities	(174,000)	(1,013,000)
Accrued interest payable	40,000	40,000
Net cash used in operating activities	(2,968,000)	(5,005,000)
Cash flows from investing activities:
Purchases of property and equipment	(16,000)	(193,000)
Net cash used in investing activities	(16,000)	(193,000)
Cash flows from financing activities:
Payment on notes payable	(11,000)	(14,000)
Net proceeds from the exercise of stock options		23,000
Net proceeds from the issuance of common stock	132,000
Net cash provided by financing activities	121,000	9,000
Net decrease in cash and cash equivalents	(2,863,000)	(5,189,000)
Cash and cash equivalents, beginning of period	3,096,000	8,431,000
Cash and cash equivalents, end of period	233,000	3,242,000
Supplemental disclosure of cash flow information:
Interest paid	2,000	3,000
Assets acquired through financing arrangements		25,000
Supplemental disclosure of non cash investing and financing
Shares issued for services	$ 62,000