Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of the Statutory Federal Income Tax Rate to the Company's Effective Income Tax Rate (Detail)

v2.4.0.8
Income Taxes - Reconciliation of the Statutory Federal Income Tax Rate to the Company's Effective Income Tax Rate (Detail)
12 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Sep. 24, 2011
Income Tax Disclosure [Abstract]      
Statutory federal income tax rate (35.00%) 35.00% 35.00%
State income taxes, net of federal benefit (5.20%) 2.30% 2.80%
Other permanent differences 2.40% 0.60% 1.40%
Adjustment of prior year accruals 1.80% 0.20% 1.20%
Uncertain tax positions 3.70% 0.00% (0.30%)
Credits (29.30%) (1.20%) (2.90%)
Change in valuation allowances (9.00%) (0.10%) 3.20%
Foreign rate differential (3.60%) (0.10%) 0.40%
Effective income tax rate (benefit) (74.20%) 36.70% 40.80%