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Property, Plant and Equipment and Railcars on Leases, net (Details 1)
$ in Thousands
Mar. 31, 2017
USD ($)
Operating Leases, Future Minimum Payments Receivable [Abstract]  
Remaining 9 months of 2017 $ 94,790
2018 116,668
2019 97,354
2020 61,192
2021 44,793
2022 and thereafter 69,598
Total $ 484,395