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Stock-Based Compensation (Tables)
3 Months Ended
Mar. 31, 2013
Stock-Based Compensation [Abstract]  
Summary of Stock Option Activity [Table Text Block]
                           

 

Options

 

 

Weighted Average Exercise Price

Per Share

 

Weighted Average Remaining Contractual Term

 

Aggregate Intrinsic Value ($000)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outstanding at January 1, 2013

226,739

 

 

$

26.27

 

 

 6.1

 Yrs.

 

$

256

 

Granted

1,100

 

 

 

27.55

 

 

9.7

Yrs.

 

 

30

 

Exercised

           (6,270)

 

 

 

22.62

 

 

2.9

Yrs

 

 

-

 

Forfeited

(5,583)

 

 

 

27.89

 

 

4.3

Yrs.

 

 

 

Outstanding at March 31, 2013

215,986

 

 

$

26.34

 

 

6.0

 Yrs.

 

$

347        

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Exercisable at March 31, 2013

184,636

 

 

$

26.22

 

 

5.3

 Yrs.

 

$

324