Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
	Jul. 02, 2011	Jul. 03, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (6,922,000)	$ (5,629,000)
Adjustments to reconcile net loss to net cash used for operating activities:
Depreciation and amortization	410,000	517,000
Stock-based compensation expense	818,000	516,000
Write-off of intangibles	770,000
Provision for excess and obsolete inventories		180,000
Fair value of derivatives		(168,000)
Changes in assets and liabilities:
Accounts receivable	(1,000)	(128,000)
Inventories	(73,000)	(96,000)
Prepaid expenses and other current assets	44,000	(3,000)
Patents and licenses	(46,000)	(151,000)
Other assets	3,000	9,000
Accounts payable, accrued expenses and other current liabilities	191,000	869,000
Net cash used in operating activities	(4,806,000)	(4,084,000)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(647,000)	(176,000)
Net cash used in investing activities	(647,000)	(176,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repurchase of common shares for withholding obligations	(303,000)	(573,000)
Net proceeds from the sale of common stock	12,402,000
Net cash provided by (used in) financing activities	12,099,000	(573,000)
Net increase (decrease) in cash and cash equivalents	6,646,000	(4,833,000)
Cash and cash equivalents at beginning of period	6,069,000	10,365,000
Cash and cash equivalents at end of period	$ 12,715,000	$ 5,532,000