Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 25, 2011
Cash flow from operating activities:
Net loss	$ (3,169)	$ (2,619)
Income from discontinued operations, net of tax provision	991
Net loss from continuing operations	(4,160)	(2,619)
Adjustments to reconcile net loss from continuing operations to net cash used in operating activities from continuing operations:
Depreciation and amortization	34	110
Non-cash intra-period tax allocation	(671)
Share-based compensation	1,634	1,215
Loss on sale of property and equipment		29
Changes in assets and liabilities:
Receivables	995	304
Prepaid expenses and other assets	196	(417)
Accounts payable, accrued expenses and other liabilities	(505)	(1,119)
Deferred revenue	(1,263)	(6,534)
Net cash used in operating activities	(3,740)	(9,031)
Cash flow from investing activities:
Proceeds from sales of maturities of marketable securities	2,079	52,035
Purchases of marketable securities		(10,632)
Proceeds from sales of property and equipment		158
Capital expenditures		(1)
Net cash provided by investing activities	2,079	41,560
Cash flow from financing activities:
Proceeds from issuances of common stock for employee benefit plans		525
Net cash provided by financing activities		525
Net increase (decrease) in cash and cash equivalents	(1,661)	33,054
Cash and cash equivalents at beginning of period	94,310	53,564
Cash and cash equivalents at end of period	$ 92,649	$ 86,618