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Stockholders' Equity - Additional Information (Detail) - USD ($) | Jul. 22, 2015 | Jun. 30, 2015 | Sep. 06, 2013
--- | --- | --- | ---
Stockholders Equity Note [Line Items] |  |  |
Remaining Amount approved for repurchases under stock buyback program |  | $ 187,000,000 |
2013 Program | Maximum |  |  |
Stockholders Equity Note [Line Items] |  |  |
Amount approved for repurchases under stock buyback program |  |  | $ 200,000,000
Subsequent Event | Dividend Declared |  |  |
Stockholders Equity Note [Line Items] |  |  |
Dividend declaration date | Jul. 22, 2015 |  |
Dividend per share, declared | $ 0.10 |  |
Dividend payment date | Sep. 24, 2015 |  |
Dividend record date | Sep. 10, 2015 |  |

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