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Subsequent Event - Additional Information (Detail) (USD $)
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Sep. 11, 2014
2014 Share Repurchase Program [Member]
Subsequent Event [Member]
Maximum [Member]
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Aug. 03, 2013
2013 Share Repurchase Program [Member]
Maximum [Member]
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Sep. 11, 2014
2013 Share Repurchase Program [Member]
Subsequent Event [Member]
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| Subsequent Event [Line Items] | |||
| Repurchase of common stock authorized amount | $ 300,000,000 | $ 150,000,000 | |
| Shares authorized but unused amount revoked | $ 112,664,000 |
| X | ||||||||||
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- Definition
Amount of stock repurchase plan authorized. No definition available.
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| X | ||||||||||
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- Definition
Amount remaining of a stock repurchase plan authorized. No definition available.
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| X | ||||||||||
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- Details
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