Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Jan. 01, 2019
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Lease liabilities	$ 95,877	$ 95,877
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	10 months 9 days	10 months 9 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 3 months 18 days	79 years 3 months 18 days
Lease liabilities	$ 77,530	$ 77,530
Lease cost	$ 1,300	$ 5,800
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	8 years 6 months	8 years 6 months
Lease liabilities	$ 18,347	$ 18,347
Lease cost	$ 1,100	$ 2,400
Operating lease, weighted average discount rate, percent	3.22%	3.22%