Condensed Consolidated Statements of Cash Flows (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Cash flows from operating activities:
Net loss	$ (1,323,000)	$ (1,980,000)
Reconciliation of net loss to net cash used in operating activities:
Depreciation	172,000	156,000
Amortization of license fee	50,000	50,000
Stock-based compensation expense	164,000	185,000
Provision for write down of inventory	61,000	90,000
Amortization of debt issuance costs	81,000	81,000
Loss on abandonment of property	11,000
Changes in operating assets and liabilities:
Accounts receivable	(371,000)	(549,000)
Inventories	(112,000)	(216,000)
Prepaid expenses and other assets	179,000	26,000
Accounts payable and accrued expenses	159,000	(43,000)
Deferred income	(2,000)	(9,000)
Net cash used in operating activities	(931,000)	(2,209,000)
Cash flows from investing activities:
Capital expenditures	(336,000)	(78,000)
Net cash used in investing activities	(336,000)	(78,000)
Cash flows from financing activities:
Proceeds from note payable, related party		500,000
Principal payments on capital lease obligation	(22,000)	(15,000)
Proceeds from exercise of common stock options	26,000	73,000
Net cash provided by financing activities	4,000	558,000
Net decrease in cash and cash equivalents	(1,263,000)	(1,729,000)
Cash and cash equivalents at beginning of period	2,914,000	5,116,000
Cash and cash equivalents at end of period	1,651,000	3,387,000
Supplemental cash flow information:
Cash payments for interest	64,000	55,000
Cash payment for taxes	9,000	5,000
Non cash investing and financing transactions:
Equipment purchases financed through capital leases	30,000
Cashless exercise of warrants		2,000
Restricted stock forfeited		$ 1,000