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Dividends - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 8 Months Ended
Oct. 06, 2015
Sep. 06, 2015
Sep. 07, 2014
Sep. 06, 2015
Sep. 07, 2014
Dec. 28, 2014
 [1]
Dividends Payable [Line Items]            
Dividends declared per share   $ 0.31 $ 0.25 $ 0.93 $ 0.75  
Common stock dividends accrued   $ 17,316   $ 17,316   $ 14,351
Common stock dividend paid       $ 48,141 $ 39,208  
Record date of dividend   Sep. 15, 2015        
Dividend payable date   Sep. 30, 2015        
Subsequent Event [Member]            
Dividends Payable [Line Items]            
Dividends declared per share $ 0.31          
Record date of dividend Dec. 15, 2015          
Dividend payable date Dec. 30, 2015          
[1] The balance sheet at December 28, 2014 has been derived from the audited consolidated financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.