Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (2,988,000)	$ (3,713,000)
Adjustments to reconcile net loss to net cash used for operating activities:
Depreciation and amortization	66,000	211,000
Stock-based compensation expense	321,000	395,000
Write-off of intangibles		770,000
Provision for excess and obsolete inventories	92,000
Gain on disposal of property and equipment	(15,000)
Changes in assets and liabilities:
Accounts receivable	(119,000)	(471,000)
Inventories	161,000	277,000
Prepaid expenses and other current assets	37,000	120,000
Patents and licenses	30,000	(42,000)
Other assets	2,000	2,000
Accounts payable, accrued expenses and other current liabilities	237,000	405,000
Net cash used in operating activities	(2,176,000)	(2,046,000)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(966,000)	(35,000)
Net proceeds from the sale of property and equipment	15,000
Net cash used in investing activities	(951,000)	(35,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase of common shares for withholding obligations	(129,000)	(278,000)
Net proceeds from the sale of common stock	6,621,000	12,402,000
Net cash provided by financing activities	6,492,000	12,124,000
Net increase in cash and cash equivalents	3,365,000	10,043,000
Cash and cash equivalents at beginning of period	6,165,000	6,069,000
Cash and cash equivalents at end of period	$ 9,530,000	$ 16,112,000