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Restricted Stock Units Issued (Detail) (Restricted Stock, USD $) | 9 Months Ended
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Sep. 30, 2013
Restricted Stock |
Restricted Stock Units |
Beginning Restricted Stock Units | 3,883
Restricted Stock Units Granted |
Dividend Equivalents Earned | 141
Restricted Stock Units Settled |
Ending Restricted Stock Units | 4,024
Weighted-Average Stock Price |
Beginning Restricted Stock Units | $ 27.39
Restricted Stock Units Granted |
Dividend Equivalents Earned | $ 28.72
Restricted Stock Units Settled |
Ending Restricted Stock Units | $ 27.44

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