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Commitments and Contingencies - Future Minimum Lease Payments to the Company Under Noncancelable Operating Leases (Details)
$ in Thousands
Mar. 31, 2018
USD ($)
property
Commitments and Contingencies Disclosure [Abstract]  
Number of TRS Leases Expiring in 2018 1
Number of TRS Leases Expiring in 2019 | property 24
Number of TRS Leases Expiring in 2022 | property 7
Number of TRS Leases expiring Thereafter | property 1
2018 $ 80,231
2019 69,296
2020 (1) 0
2021 (1) 0
2022 (1) 0
Thereafter (1) 0
Total $ 149,527