Expected and Actual Cash Charges and Non-Cash Charges (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended	11 Months Ended
	Sep. 28, 2012	Sep. 28, 2012	Sep. 28, 2012
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	$ 974	$ 5,626
Cumulative Costs for Plan			7,593
Expected Cumulative Costs		8,500
Cash Charges
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	974	3,735
Cumulative Costs for Plan			4,797
Expected Cumulative Costs		5,500
Non-Cash Charges
Restructuring Cost and Reserve [Line Items]
Total restructuring costs		1,891
Cumulative Costs for Plan			2,796
Expected Cumulative Costs		$ 3,000