Costs Associated with Exit and Restructuring Activities - Summary of Exit and Restructuring Costs Incurred (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended	18 Months Ended
	Jun. 29, 2013	Jun. 30, 2012	Jun. 29, 2013	Jun. 30, 2012	Dec. 31, 2012	Jun. 29, 2013
Restructuring Cost and Reserve [Line Items]
Severance, stay bonuses, and other employee-related expenses	$ 1,036		$ 2,898		$ 960	$ 3,858
Professional services	54		66		0	66
Relocation and transition costs	11		32		0	32
Total	1,101	0	2,996	0	960	3,956
Additional costs expected to be incurred						3,694
Total costs expected to be incurred						7,650
Severance, Stay Bonuses, and Other Employee-Related Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Additional costs expected to be incurred						2,702
Total costs expected to be incurred						6,560
Professional Services [Member]
Restructuring Cost and Reserve [Line Items]
Additional costs expected to be incurred						244
Total costs expected to be incurred						310
Relocation and Transition Costs [Member]
Restructuring Cost and Reserve [Line Items]
Additional costs expected to be incurred						748
Total costs expected to be incurred						$ 780