Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2013
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Money market funds	$ 1,214	[1]
Equity securities	170
Total assets measured at fair value	1,384
Contingent obligation for make-whole premium	699
Total liabilities measured at fair value	699
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Money market funds	1,214	[1]
Equity securities	170
Total assets measured at fair value	1,384
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Contingent obligation for make-whole premium	699
Total liabilities measured at fair value	$ 699

[1] Excludes $90.8 million in cash held in our bank accounts at September 28, 2013.