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Stock-Based Compensation Plan (Tables)
9 Months Ended
Sep. 30, 2012
Stock-Based Compensation [Abstract]  
Stock Option Plan Activity
The following table summarizes the activity in the Company's stock option plan for the nine months ended September 30, 2012 and 2011:
 
 
 
Nine months Ended September 30,
 
 
 
2012
 
 
2011
 
 
 
Number of
Shares
 
 
Weighted
Average
Exercise Price
 
 
Number of
Shares
 
 
Weighted
Average
Exercise Price
 
Options outstanding at January 1
 
 
1,192,680
 
 
$
12.89
 
 
 
972,680
 
 
$
10.32
 
Options granted - employees
 
 
111,000
 
 
$
17.77
 
 
 
180,000
 
 
$
24.82
 
Options forfeited- employees
   
(8,000
)
 
$
17.77
     
-
     
-
 
Options granted - directors
 
 
40,000
 
 
$
17.77
 
 
 
40,000
 
 
$
21.62
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Options outstanding at September 30
 
 
1,335,680
 
 
$
13.41
 
 
 
1,192,680
 
 
$
12.89
 
Options exercisable
 
 
991,430
 
 
$
12.11
 
 
 
775,805
 
 
$
11.52
 
Weighted average remaining term
 
6.0 years
 
 
 
 
 
 
7.3 years
 
 
 
 
 
Fair Value Assumptions
The fair value of the stock options granted to the Company's employees and independent directors was estimated using the Black-Scholes-Merton pricing model using the following weighted average assumption:

 
 
Nine Months Ended
September 30,
 
 
 
2012
 
 
2011
 
Stock price
 
$
17.77
 
 
$
24.24
 
Exercise price
 
$
17.77
 
 
$
24.24
 
Expected term:
 
 
 
 
 
 
 
 
Employees
 
6.25 years
 
 
6.25 years
 
Directors
 
5.5 years
 
 
5.5 years
 
Expected volatility:
 
 
 
 
 
 
 
 
Employees
 
 
49.5
%
 
 
50.2
%
Directors
 
 
50.2
%
 
 
50.8
%
Dividend yield
 
 
0
%
 
 
0
%
Risk free rate
 
 
0.75
%
 
 
1.89
%