Summary of Treasury Stock Activity (Parenthetical) (Detail) |
9 Months Ended |
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Sep. 30, 2018
$ / shares
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| Minimum | |
| Schedule of Treasury Stock [Line Items] | |
| Market Value of Restricted Shares | $ 33.77 |
| Maximum | |
| Schedule of Treasury Stock [Line Items] | |
| Market Value of Restricted Shares | $ 39.03 |
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- Definition Market value per share of restricted shares withheld by company related to restricted stock vesting No definition available.
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- Definition Schedule of Treasury Stock [Line Items] No definition available.
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- Details
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- Details
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