Leases - Narrative (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($) property	Dec. 31, 2018 USD ($)
Lessor, Lease, Description [Line Items]
Number of Properties | property	3,926
Weighted average remaining lease term	16 years 6 months
Weighted average discount rate	4.91%
Operating lease right-of-use asset, initial measurement		$ 233,300
Operating lease liability, initial measurement		236,300
Operating lease right-of-use assets	$ 218,393	0
Operating lease liabilities	$ 223,288	$ 0
Minimum [Member]
Lessor, Lease, Description [Line Items]
Lease terms	21 days
Remaining lease terms	3 months 18 days
Maximum [Member]
Lessor, Lease, Description [Line Items]
Lease terms	25 years 3 months 18 days
Remaining lease terms	79 years 10 months 24 days
Accounting Standards Update 2016-02 [Member]
Lessor, Lease, Description [Line Items]
Operating lease right-of-use assets	$ 2,500
Operating lease liabilities	$ 3,000