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Equity - Additional Information (Detail) |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Nov. 08, 2007 shares $ / shares | Oct. 31, 2014 shares | Dec. 31, 2016 $ / shares shares | Jan. 02, 2016 $ / shares shares | Jan. 03, 2015 $ / shares shares | Feb. 28, 2013 shares
Equity [Line Items] |  |  |  |  |  |
Dividends declared for outstanding common stock | One preferred stock purchase right |  |  |  |  |
Preferred stock voting rights per share | $ 1.000 |  |  |  |  |
Par value of preferred stock under stockholder rights plan |  |  | $ 0.001 | $ 0.001 |  |
Number of right to be issued with each share of common stock | shares | 1 |  |  |  |  |
Average cost per share |  |  | $ 42.39 | $ 37.36 | $ 23.00 |
Shares repurchased | shares |  |  | 1,496,000 | 4,148,000 | 4,455,000 |
Series A Preferred Stock |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |
Par value of preferred stock under stockholder rights plan | $ 0.001 |  |  |  |  |
Purchase price per right | $ 136.00 |  |  |  |  |
2013 Repurchase Program [Member] | Common Stock |  |  |  |  |  |
Equity [Line Items] |  |  |  |  |  |
Number of common shares authorized to be repurchased under repurchase program | shares |  | 9,000,000 |  |  |  | 6,000,000.0
Stock Repurchase Program, Increase (Decrease) in Number of Shares Authorized to be Repurchased | shares |  | 3,000,000.0 |  |  |  |

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