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Income Taxes - (Tables)
 9 Months Ended
Sep. 30, 2013
Income Taxes [Abstract]  
Schedule of effective tax rate [Table Text Block]
The following table provides details of income taxes:


Three Months Ended
 
Nine Months Ended
 
September 30,
 
September 30,
 
2013

2012
 
2013
 
2012
Income before income taxes
$
37

 
$
10,571

 
$
1,114

 
$
23,375

Provision (benefit) for income taxes
$
(215
)
 
$
3,910

 
$
(290
)
 
$
8,506

Effective tax rate
(581.1
)%
 
37.0
%
 
(26.0
)%
 
36.4
%