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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]
As of December 31, 2014, the future minimum lease commitments related to lease agreements were as follows:
Year Ending December 31,
 
Amount
2015
 
$
2,843

2016
 
1,822

2017
 
573

2018
 
90

2019 and thereafter
 

Total minimum lease payments
 
$
5,328