Subsequent Events (Details) $ in Thousands			12 Months Ended
Subsequent Events (Details) $ in Thousands	Feb. 23, 2021 USD ($) Property retail_site Option	Feb. 11, 2021 USD ($) retail_site	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Subsequent Event [Line Items]
Proceeds from borrowings			$ 250,387	$ 510,906	$ 118,741
Forecast
Subsequent Event [Line Items]
Proceeds from borrowings	$ 54,100
Subsequent Event
Subsequent Event [Line Items]
Number of real estate properties \| retail_site	21	22
Sale leaseback transaction, aggregate purchase price	$ 109,400	$ 116,100
Number of properties \| Property	1
Repurchase amount	$ 51,700
Sale-leaseback transaction term of contract	15 years
Number of renewal terms \| Option	4
Sale-leaseback transaction renewal terms	5 years