v2.4.0.6
Marketable Securities - Reconciles Cost Basis to Fair Market Value of Company's One Equity Security (Detail) (Equity securities [Member], USD $)
In Thousands, unless otherwise specified
Mar. 30, 2013
Equity securities [Member]
 
Schedule of Available-for-sale Securities [Line Items]  
Equity security, Cost $ 5,931
Equity security, Gross Unrealized Gains 2,228
Equity security, Gross Unrealized Losses   
Equity security, Fair Value $ 8,159