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Share-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2013
Share-Based Compensation  
Schedule of assumptions used and weighted average fair value for stock option grants

Expected annual dividend rate

 

1.21

%

Risk-free interest rate

 

0.92

%

Average expected life (years)

 

6.0

 

Expected volatility of common stock

 

0.446

 

Forfeiture rate

 

0.00

%

Weighted average fair value of option grants

 

$

5.04