Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Additional Information (Detail)

v3.3.1.900
Fair Value Measurements - Additional Information (Detail) - USD ($)
 1 Months Ended 3 Months Ended 12 Months Ended
Mar. 01, 2015
Jan. 31, 2015
Sep. 26, 2015
Sep. 26, 2015
Sep. 27, 2014
Sep. 28, 2013
Mar. 08, 2010
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Indefinite-lived intangible assets, carrying value     $ 22,300,000 $ 22,300,000      
Indefinite-lived intangible assets, fair value     15,000,000 15,000,000      
Indefinite-lived intangible assets, impairment charge     7,300,000 7,300,000 $ 0 $ 0  
Goodwill impairment           $ 7,709,000  
Carrying value of senior subordinated notes     400,139,000 400,139,000 450,239,000    
Senior Subordinated Notes, Net of Unamortized Discount, Interest at 8.25%, Payable Semi-annually, Principal Due March 2018 [Member]              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Debt, aggregate principal amount   $ 50,000,000 400,000,000 $ 400,000,000 450,000,000    
Debt, redemption of principal amount $ 50,000,000 $ 50,000,000          
Redemption date of senior notes       Mar. 01, 2015      
Debt redemption price percentage 102.063% 102.063%          
Carrying value of senior subordinated notes     399,691,000 $ 399,691,000 449,529,000   $ 400,000,000
Senior Subordinated Notes, Net of Unamortized Discount, Interest at 8.25%, Payable Semi-annually, Principal Due March 2018 [Member] | Carrying (Reported) Amount, Fair Value Disclosure [Member]              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Carrying value of senior subordinated notes     399,700,000 399,700,000 449,500,000    
Senior Subordinated Notes, Net of Unamortized Discount, Interest at 8.25%, Payable Semi-annually, Principal Due March 2018 [Member] | Level 1 [Member] | Portion at Fair Value, Fair Value Disclosure [Member]              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Estimated fair value of senior subordinated notes due 2018     $ 410,500,000 $ 410,500,000 $ 459,500,000