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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Fair Values of Options Calculated Based on Assumptions Using Black-Scholes Option-Pricing Model

The fair value of the options as of the dates of grant was calculated using the Black-Scholes option-pricing model based on the assumptions outlined below.

 

     Grant Date  
     2014      2013      2012  

Options granted

         176,000             173,750             164,500   

Exercise price

   $ 20.00       $ 17.16       $ 17.67   

Assumptions:

        

Expected life in years

     6         6         6   

Risk-free interest rate

     1.98%         1.26%         0.76%   

Expected annual dividend yield

     3.60%         4.20%         3.01%   

Expected forfeiture rate

     8.00%         5.00%         0%   

Expected volatility

     53.02%         52.68%         53.46%   

Grant date fair value

   $ 7.40       $ 5.82       $ 6.68   

Resulting stock-based compensation expense

   $ 1,199       $ 961       $ 1,099   
Summary of Stock Options Outstanding and Exercisable

A summary of stock options outstanding and exercisable and activity for the year ended December 31, 2014 is as follows:

 

      Shares
Under
Options
          Weighted
Average
Exercise
Price
     Remaining
Contractual
Life In
Years
    

Intrinsic

Value

 

Outstanding at January 1, 2014

     1,201,753        $ 24.85         6.5       $ 982   

Granted

     176,000          20.00         

Exercised

     (40,084        14.50         

Forfeited

     (135,500          26.87                     

Outstanding at December 31, 2014

     1,202,169           $ 24.25         6.0       $ 778   

Exercisable at December 31, 2014

     914,752           $ 25.97         5.2       $ 778   

Vested or expected to vest at December 31, 2014

     1,197,365           $     24.27         6.0       $     778