XML 49 R59.htm IDEA: XBRL DOCUMENT v2.4.1.9
Income Taxes - Additional Information (Detail)
3 Months Ended 6 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Mar. 28, 2015
Mar. 29, 2014
Income Tax Disclosure [Abstract]        
Company's effective tax rate 21.40%us-gaap_EffectiveIncomeTaxRateContinuingOperations 42.70%us-gaap_EffectiveIncomeTaxRateContinuingOperations 26.60%us-gaap_EffectiveIncomeTaxRateContinuingOperations 67.90%us-gaap_EffectiveIncomeTaxRateContinuingOperations