Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Jan. 01, 2019
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Lease liabilities	$ 80,807	$ 80,807
ASU 2016-02
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Right of use assets			$ 87,500
Lease liabilities			$ 79,700
Commercial lease
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Lease, existence of option to extend		true
Residential Lease
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Lease, existence of option to extend		false
Weighted average remaining term	9 months 24 days	9 months 24 days
Lease, option to extend		Generally, our residential leases do not provide extension options
Ground Lease
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Weighted average remaining term	79 years 4 months 24 days	79 years 4 months 24 days
Lease liabilities	$ 76,795	$ 76,795
Lease cost	$ 1,300	$ 4,500
Operating lease, weighted average discount rate, percent	4.12%	4.12%
Office Lease
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Weighted average remaining term	9 years 7 months 6 days	9 years 7 months 6 days
Lease liabilities	$ 4,012	$ 4,012
Lease cost	$ 600	$ 1,300
Operating lease, weighted average discount rate, percent	3.65%	3.65%