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Share-Based Payments (Tables)
3 Months Ended
Mar. 31, 2013
Share-Based Payments [Abstract]  
Schedule of Nonvested Option Activity
    Number of Shares     Weighted Average
Grant Date Fair Value
 
Nonvested options - beginning of period     346,075     $ 5.02  
Nonvested options granted     9,000     $ 6.17  
Nonvested options vested or forfeited     (11,275 )   $ 4.16  
Nonvested options - end of period     343,800     $ 5.08
Schedule of Stock Option Activity
    Shares     Weighted Average
Exercise Price
 
             
Outstanding at January 1, 2013     716,235     $ 14.41  
Options granted     9,000       21.95  
Options cancelled     (400 )     19.33  
Options exercised     (21,325 )     11.98  
                 
Outstanding at March 31, 2013     703,510     $ 14.57  
                 
Options exercisable     359,710     $ 12.25  
Options available for future grants     584,075          
Summary of Options Exercised
(In thousands)   March 31,
2013
    March 31,
2012
 
             
Cash proceeds from stock options exercised   $ 256     $ 247  
Tax benefits     21       25  
Intrinsic value of stock options exercised     235       78
Schedule of Assumptions Used to Estimate Fair Value of Stock Options
    March 31,
2013
    March 31,
2012
 
             
Weighted-average expected stock-price volatility     38 %     40 %
Weighted-average expected option life     5 years       4.5 years  
Weighted-average risk-free interest rate     0.89 %     0.84 %
Weighted-average dividend yield     2 %     1.7 %