Commitments and Contingencies - Lease Commitments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Future minimum commitments under facility leases commitments with terms of more than one year
2018	$ 84,451
2019	92,915
2020	95,672
2021	93,879
2022	93,258
Thereafter	649,785
Total minimum lease payments	1,109,960
Sublease income 2018	6,000
Rental expense	19,200	$ 19,100	$ 18,100
Fan Pier Leases
Future minimum commitments under facility leases commitments with terms of more than one year
2018	61,606
2019	72,589
2020	72,589
2021	72,589
2022	72,589
Thereafter	462,442
Total minimum lease payments	814,404
San Diego Leases
Future minimum commitments under facility leases commitments with terms of more than one year
2018	2,979
2019	5,324
2020	9,127
2021	9,127
2022	9,127
Thereafter	129,394
Total minimum lease payments	165,078
Other Leases
Future minimum commitments under facility leases commitments with terms of more than one year
2018	19,866
2019	15,002
2020	13,956
2021	12,163
2022	11,542
Thereafter	57,949
Total minimum lease payments	$ 130,478