Annual report pursuant to Section 13 and 15(d)

Income Taxes - Activity Related to Company's Unrecognized Tax Benefits (Detail)

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Income Taxes - Activity Related to Company's Unrecognized Tax Benefits (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Sep. 27, 2014
Sep. 28, 2013
Income Tax Disclosure [Abstract]    
Beginning Balance $ 364 $ 262
Increases related to prior year tax positions 264 247
Increases related to current year tax positions 14 60
Decreases related to prior year tax positions (166)  
Settlements (388) (202)
Decreases related to lapse of statute of limitations (1) (3)
Ending Balance $ 87 $ 364