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Subsequent Event - Narrative (Details) - Subsequent Event
$ in Millions
Aug. 08, 2017
USD ($)
property
period
Subsequent Event [Line Items]  
Sale leaseback transaction, number of properties | property 44
Sale leaseback transaction, gross proceeds | $ $ 123.5
Sale leaseback transaction, lease term (in years) 20 years
Sale leaseback transaction, number of additional periods | period 5
Sale lleaseback transaction, length of each additional period (in years) 5 years