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Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
A summary of option activity under our 1998 Stock Option plan for the six months ended June 30, 2012 is presented below.

 
Number
 of
Stock Options
 
Weighted Average
Exercise
 Price
 
Weighted
Average
Remaining
Contractual Life (years)
 
Aggregate
Intrinsic
Value
(in thousands)
Outstanding, December 31, 2011
422,239

 
$
15.06

 
6.48

 
$
766

Granted
20,000

 
14.89

 
8.00

 


Exercised
(7,500
)
 
7.66

 

 


Canceled/Forfeited

 

 

 


Outstanding, June 30, 2012
434,739

 
$
15.18

 
6.10

 
$
770

Exercisable, June 30, 2012
366,072

 
$
14.81

 
5.66

 
$
770

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]
The following table summarizes information about our stock options outstanding at June 30, 2012:

 
Range of Exercise Prices
 
Options Outstanding
 
Options Exercisable
 
Shares
 
Weighted
Average
Remaining
Contractual
Life (years)
 
Weighted
Average
Exercise
Price
 
Shares
 
Weighted
Average
Exercise
Price
0.01 – 5.58
 
5,000

 
1.00
 
$
4.72

 
5,000

 
$
4.72

5.59 – 9.43
 
89,239

 
4.41
 
8.62

 
89,239

 
8.62

9.44 – 15.60
 
85,000

 
6.32
 
12.94

 
65,000

 
12.34

15.61 – 20.48
 
255,500

 
6.71
 
18.42

 
206,833

 
18.50

0.01 – 20.48
 
434,739

 
6.10
 
$
15.18

 
366,072

 
$
14.81

Schedule of Stock Options Roll Forward [Table Text Block]
he summary of the status of our unvested stock options as of December 31, 2011 and changes during the six months ended June 30, 2012 is presented below.

 
 
 
Unvested stock options:
Shares
 
Weighted Average
Grant Date Fair Value
Unvested at December 31, 2011 
78,666

 
$
8.82

Granted
20,000

14.89

14.89

Vested
(29,999
)
 
7.99

Unvested at June 30, 2012
68,667

 
$
10.95