Leases - Future Minimum Commitments Under Real Estate Leases (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Operating Leased Assets [Line Items]  
2019 $ 85,071
2020 95,986
2021 94,245
2022 93,761
2023 94,071
Thereafter 575,191
Total minimum lease payments 1,038,325
Fan Pier Leases  
Operating Leased Assets [Line Items]  
2019 66,540
2020 72,589
2021 72,589
2022 72,589
2023 72,589
Thereafter 389,855
Total minimum lease payments 746,751
Other Leases  
Operating Leased Assets [Line Items]  
2019 18,531
2020 23,397
2021 21,656
2022 21,172
2023 21,482
Thereafter 185,336
Total minimum lease payments $ 291,574