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Operating Revenues under Customer Agreements - Schedule of Future Minimum Lease Payments (Details)
$ in Thousands
Dec. 31, 2015
USD ($)
Operating Leases Future Minimum Payments Receivable [Abstract]  
2016 $ 13,557
2017 13,697
2018 13,817
2019 13,939
2020 14,065
Thereafter 199,278
Total $ 268,353