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Commitments, Contingencies and Guarantees - Schedule of Future Minimum Annual Rentals (Details)
$ in Thousands
Dec. 31, 2017
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2018 $ 94,734
2019 84,110
2020 68,195
2021 62,507
2022 59,844
Thereafter 638,441
Future minimum annual rentals 1,007,831
Less: sublease income (29,633)
Future minimum annual rentals net of sublease income $ 978,198