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Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 4 Months Ended | 12 Months Ended | 168 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 16, 2016 | Dec. 31, 2016 | Jul. 16, 2016 | Apr. 23, 2016 | Dec. 31, 2016 | Dec. 31, 2016 | Jan. 02, 2016 | Dec. 19, 2002
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Common stock, shares authorized |  | 500,000,000 |  |  | 500,000,000 | 500,000,000 | 500,000,000 |
Common stock, par value |  | $ 0.01 |  |  | $ 0.01 | $ 0.01 | $ 0.01 |
Preferred stock, shares authorized |  | 1,000,000 |  |  | 1,000,000 | 1,000,000 |  |
Common stock, voting rights |  |  |  |  | one vote for each share |  |  |
Stock repurchase plan, shares authorized |  |  |  |  |  |  |  | 74,600,000
Current shares available for repurchase |  | 6,800,000 |  |  | 6,800,000 | 6,800,000 |  |
Purchase of shares under accelerated share repurchase |  | 128 | 932,380 | 5,959,814 | 6,892,322 | 67,800 |  |
Agreement to repurchase an aggregate of common stock |  | $ 2 | $ 18,000 | $ 108,298 | $ 126,300 | $ 630,400 |  |
Accelerated Share Repurchase Program |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Purchase of shares under accelerated share repurchase | 5,600,000 |  | 900,000 |  |  |  |  |
Agreement to repurchase an aggregate of common stock | $ 120,000 |  |  |  |  |  |  |
Series A Preferred Stock |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Preferred stock, shares authorized |  | 200,000 |  |  | 200,000 | 200,000 | 200,000 |
Preferred stock, par value |  | $ 100 |  |  | $ 100 | $ 100 | $ 100 |
Preferred stock, shares issued |  | 0 |  |  | 0 | 0 | 0 |
Series B Preferred Stock |  |  |  |  |  |  |  |
Class Of Stock [Line Items] |  |  |  |  |  |  |  |
Preferred stock, shares authorized |  | 800,000 |  |  | 800,000 | 800,000 | 800,000 |
Preferred stock, par value |  | $ 0.01 |  |  | $ 0.01 | $ 0.01 | $ 0.01 |
Preferred stock, shares issued |  | 0 |  |  | 0 | 0 | 0 |

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