Statements of Cash Flows (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net loss	$ (2,215,000)	$ (1,807,000)
Inventory reserve	558,000	58,000
Depreciation and amortization	119,000	124,000
Loss on litigation settlement		41,000
Stock option expense	139,000	119,000
Accounts receivable	(163,000)	23,000
Inventory and supplies	(94,000)	(582,000)
Prepaid expenses and other current assets	(74,000)	63,000
Long term accounts receivable	20,000	(45,000)
Accounts payable	136,000	(1,219,000)
Deferred revenues	(88,000)	120,000
Accrued payroll and related expense	(63,000)	(340,000)
Other accrued liabilities	(11,000)	(740,000)
Accrued interest payable	20,000	20,000
Net cash used in operating activities	(1,716,000)	(4,165,000)
Cash flows from investing activities:
Purchases of property and equipment	(16,000)	(52,000)
Net cash used in investing activities	(16,000)	(52,000)
Cash flows from financing activities:
Payment on notes payable and capital lease obligations	(6,000)	(6,000)
Net proceeds from the exercise of stock options		21,000
Net cash provided by (used in) financing activities	(6,000)	15,000
Net (decrease) in cash and cash equivalents	(1,738,000)	(4,202,000)
Cash and cash equivalents, beginning of period	3,096,000	8,431,000
Cash and cash equivalents, end of period	1,358,000	4,229,000
Supplemental disclosure of cash flow information:
Interest paid	2,000	2,000
Assets acquired through financing arrangements		$ 25,000