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Property, Plant and Equipment (Details 1) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Operating Leases, Future Minimum Payments Receivable [Abstract]  
Remaining 6 months of 2014 $ 29,840
2015 59,268
2016 57,550
2017 43,401
2018 31,500
2019 and thereafter 47,724
Total $ 269,283