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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2014
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 December 31, 2014 are as follows (in thousands):  
Years ended
 
Operating Leases
2015
 
$
1,567.9

2016
 
1,656.9

2017
 
1,367.3

2018
 
535.2

2019
 
492.4

2020 and thereafter
 
628.1

Total minimum lease payments
 
$
6,247.8