Income Taxes (Details Textual) (USD $)	3 Months Ended	6 Months Ended
Jun. 29, 2012	Jul. 01, 2011	Jun. 29, 2012	Jul. 01, 2011	Dec. 31, 2011
Income Taxes (Textual) [Abstract]
Income tax provision (benefit)	$ (2,416,000)	$ 778,000	$ (3,023,000)	$ 160,000
Federal statutory income tax rate			35.00%	35.00%
Gross unrecognized tax benefits including interest and penalties	51,600,000		51,600,000		52,500,000
Unrecognized tax benefits to be decreased in next 12 months due to statute of limitation expirations			700,000
Increase in interest and penalties related to uncertain tax positions			100,000
Liability for uncertain tax positions	$ 5,300,000		$ 5,300,000
Income tax returns statute of limitations extended date			End of 2013

The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

+ References+ Details

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

+ References+ Details

- Definition

This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

+ References+ Details

- Definition

This element represents the total of interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties in the period in which the entity claims or expects to claim a tax position, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

+ References+ Details