STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net loss	$ (8,235,000)	$ (6,984,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Reserve for doubtful accounts	296,000	71,000
Inventory reserve	1,436,000	845,000
Depreciation and amortization	466,000	495,000
Loss on asset disposal	28,000	49,000
Loss on asset impairment	90,000
Loss on litigation	2,014,000	41,000
Stock option expense	171,000	368,000
Accounts receivable	255,000	2,020,000
Inventory and supplies	397,000	(426,000)
Prepaid expenses and other current assets		240,000
Long term accounts receivable	41,000	21,000
Accounts payable	204,000	(1,493,000)
Deferred revenues	(202,000)	289,000
Accrued payroll and related expense	(168,000)	(656,000)
Other accrued liabilities	(262,000)	(1,263,000)
Accrued interest payable	81,000	81,000
Net cash used in operating activities	(3,388,000)	(6,302,000)
Cash flows from investing activities:
Sale of certificate of deposit, restricted	200,000
Proceeds from the sale of fixed assets	53,000
Purchases of property and equipment	16,000	275,000
Net cash provided by (used in) investing activities	237,000	(275,000)
Cash flows from financing activities:
Payment on notes payable	20,000	26,000
Net proceeds from the exercise of stock options		23,000
Net proceeds from the issuance of common stock	132,000	1,245,000
Net cash provided by financing activities	112,000	1,242,000
Net decrease in cash and cash equivalents	(3,039,000)	(5,335,000)
Cash and cash equivalents, beginning of period	3,096,000	8,431,000
Cash and cash equivalents, end of period	57,000	3,096,000
Supplemental disclosure of cash flow information:
Interest paid	5,000	6,000
Non-cash investing and financing activities
Assets acquired through financing arrangements		25,000
Conversion of preferred stock series A to common stock		$ 2,000