Summary of Significant Accounting Policies (Details) (USD $)	3 Months Ended				12 Months Ended
	Apr. 01, 2012	Oct. 02, 2011	Jul. 03, 2011	Apr. 03, 2011	Dec. 31, 2011
Summary of Significant Accounting Policies (Textual) [Abstract]
Reporting Period	92 days	91 days	91 days	93 days	91 days
Impact of reclassifications to reported net income	$ 0
Original maturity period of cash and cash equivalents	Three months or less
Fair value of cash and cash equivalents based on quoted market prices in active markets Level 1 valuation	187,200,000
Standby letters of credit [Member]
Loss Contingencies [Line Items]
Contingency accrual at carrying value	7,000,000
Bank Guaranties [Member]
Loss Contingencies [Line Items]
Contingency accrual at carrying value	4,900,000
Surety Bonds [Member]
Loss Contingencies [Line Items]
Contingency accrual at carrying value	1,700,000
Communications cable operation in Phoenix, Arizona [Member]
Loss Contingencies [Line Items]
Interest and losses related to discontinued operations				200,000
Losses, including interest expense, related to discontinued operations, net of tax				100,000