Summary of Treasury Stock Activity (Parenthetical) (Detail) - $ / shares |
12 Months Ended | ||
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Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
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Schedule of Treasury Stock [Line Items] | |||
Common stock repurchased value as result of restricted stock forfeitures and canceled | $ 0.001 | $ 0.001 | $ 0.001 |
Minimum | |||
Schedule of Treasury Stock [Line Items] | |||
Market Value of Restricted Shares | 28.84 | 28.84 | 28.84 |
Maximum | |||
Schedule of Treasury Stock [Line Items] | |||
Market Value of Restricted Shares | $ 44.67 | $ 44.67 | $ 44.67 |
X | ||||||||||
- Definition Common stock repurchased value as result of restricted stock forfeitures and canceled. No definition available.
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X | ||||||||||
- Definition Market value per share of restricted shares withheld by company related to restricted stock vesting No definition available.
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X | ||||||||||
- Definition Schedule of Treasury Stock [Line Items] No definition available.
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X | ||||||||||
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- Details
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