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Shareholders' Equity - Additional Information (Detail) - USD ($)
$ / shares in Units, shares in Millions
 1 Months Ended 3 Months Ended 6 Months Ended
Jul. 05, 2015
Jan. 31, 2014
Jul. 05, 2015
Jun. 29, 2014
Jul. 05, 2015
Jun. 29, 2014
May. 31, 2015
Jan. 31, 2015
Stockholders Equity Note Disclosure [Line Items]                
Stock repurchase program, intend to repurchase               $ 300,000,000
Repurchase of stock, shares 6.5              
Repurchase of stock, value $ 128,300,000              
Common stock average price $ 19.74              
Dividends payable, amount per share   $ 0.06         $ 0.06 $ 0.06
Dividend payment     $ 12,800,000 $ 11,700,000 $ 25,857,000 $ 11,656,000    
Dividends payable, date to be paid   Jun. 02, 2014            
Maximum                
Stockholders Equity Note Disclosure [Line Items]                
Stock repurchase program, authorized amount               $ 500,000,000