Financing Obligations - Narrative (Details) $ in Millions |
12 Months Ended | |||
---|---|---|---|---|
Oct. 10, 2017
property
|
Dec. 31, 2018
USD ($)
property
|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2016
USD ($)
|
|
Leases [Abstract] | ||||
Sale leaseback transaction, number of properties | property | 42 | 2 | ||
Sale Leaseback Transaction, Gross Proceeds | $ 6.4 | $ 119.5 | $ 0.0 | |
Sale leaseback transaction, lease term, period (in years) | 20 years | |||
Sale leaseback transaction, renewal term, number of additional terms | 5 | |||
Sale leaseback transaction, length of each additional period (in years) | 5 years | |||
Deferred finance costs, issuance costs | $ 2.7 | |||
Deferred Finance Costs, Own-share Lending Arrangement, Issuance Costs, Accumulated Amortization Expense, Period Increase (Decrease) | $ 0.2 | $ 0.1 |