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Stock Based Compensation (Tables)
 6 Months Ended
Jun. 30, 2013
Stock Options [Member]
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Stock Options, Activity [Table text block]
The following summarizes the activity relating to stock options under the plans mentioned above for the six months ended June 30, 2013:
 
Number
of
Options
 
Weighted
Average
Exercise Price
Outstanding at December 31, 2012
374,875

 
$
3.37

Exercised
(43,575
)
 
3.16

Granted
—

 
—

Forfeited
—

 
—

Outstanding at June 30, 2013
331,300

 
$
3.40

Exercisable at June 30, 2013
316,900

 
$
3.43
Unvested Stock Options [Member]
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]
The following summarizes the status of, and changes to, unvested options during the six months ended June 30, 2013:
 
Number
of
Options
 
Weighted
Average
Exercise Price
Unvested at December 31, 2012
14,400

 
$
2.75

Granted
—

 
—

Vested
—

 
—

Forfeited
—

 
—

Unvested at June 30, 2013
14,400

 
$
2.75
Restricted Stock [Member]
  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]
The following summarizes the status of Restricted Stock grants as of June 30, 2013 and changes during the six months ended June 30, 2013:
 
Number
of
Shares
 
Weighted
Average
Grant Date
Fair Value
Unvested balance at December 31, 2012
139,730

 
$
6.77

Granted
57,556

 
9.12

Vested
(73,379
)
 
5.28

Forfeited
—

 
—

Unvested balance June 30, 2013
123,907

 
$
8.74