Organization and Significant Accounting Policies - Financial Assets and Liabilities Measured at Fair Value (Detail) (Money market fund deposits [Member], USD $) In Thousands, unless otherwise specified	Mar. 28, 2014	Dec. 27, 2013
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets and liabilities measured at fair value	$ 10,043	$ 13,414
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial assets and liabilities measured at fair value