Fair Value (Tables)
 3 Months Ended
Mar. 31, 2013
Fair Value Disclosures [Abstract]  
Fair Value, Measurement Inputs, Disclosure [Table Text Block]
For assets and liabilities measured at fair value on a recurring basis in the consolidated balance sheets, the table below categorizes fair value measurements across the three levels as of March 31, 2013 and December 31, 2012 (in thousands):
 
March 31, 2013
 
Quoted Prices in Active Markets (Level 1)
 
Significant Observable Inputs (Level 2)
 
Significant Unobservable Inputs (Level 3)
 
Total
Liabilities:
 
 
 
 
 
 
 

Contingent purchase price consideration
$
—

 
$
—

 
$
19,615

 
$
19,615

Derivative
$
—

 
$
2,038

 
$
—

 
$
2,038


 
December 31, 2012
 
Quoted Prices in Active Markets (Level 1)
 
Significant Observable Inputs (Level 2)
 
Significant Unobservable Inputs (Level 3)
 
Total
Liabilities:
 
 
 
 
 
 
 
Contingent purchase price consideration
$
—

 
$
—

 
$
49,183

 
$
49,183

Derivative
$
—

 
$
2,639

 
$
—

 
$
2,639