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Leases - Narrative (Details) $ in Millions	9 Months Ended
Leases - Narrative (Details) $ in Millions	Sep. 30, 2019 USD ($) lease
Lessee, Lease, Description [Line Items]
Remaining lease terms (up to)	42 years
Number of operating leases not yet commenced \| lease	2
Initial lease liability of operating leases that have not yet commenced \| $	$ 3.2
Minimum
Lessee, Lease, Description [Line Items]
Term of operating lease that has not yet commenced	3 years
Maximum
Lessee, Lease, Description [Line Items]
Term of operating lease that has not yet commenced	5 years