Expected and Actual Cash Charges and Non-Cash Charges (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		17 Months Ended
	Mar. 29, 2013	Mar. 30, 2012	Mar. 29, 2013
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	$ 1,625	$ 2,208
Cumulative Costs for Plan			9,649
Expected Cumulative Costs	10,000
Cash Charges
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	1,502	951
Cumulative Costs for Plan			6,672
Expected Cumulative Costs	6,900
Non-Cash Charges
Restructuring Cost and Reserve [Line Items]
Total restructuring costs	123	1,257
Cumulative Costs for Plan			2,977
Expected Cumulative Costs	$ 3,100