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Commitments and Contingencies (Tables)
3 Months Ended
Mar. 31, 2015
Commitments and Contingencies [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
A summary of future minimum rental payments required under operating leases that have initial or remaining terms in excess of one year as of March 31, 2015 are as follows (in thousands):  
Years ended
 
Operating Leases
2015
 
$
1,439.3

2016
 
2,039.3

2017
 
1,841.0

2018
 
1,023.8

2019 and thereafter
 
1,909.2

Total minimum lease payments
 
$
8,252.6