Related Party Transactions - Related Party Transfers and Acquisitions (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018 USD ($) property	Jun. 30, 2019 USD ($) property	Jun. 30, 2018 USD ($) property
Related Party Transaction [Line Items]
Net book value to parent		$ 0	$ 2,144
Net book value from parent		$ 0	$ 80,429
Affiliated entity | Spirit Realty Capital, Inc.
Related Party Transaction [Line Items]
Number of real estate properties transferred | property	10		10
Net book value from parent	$ 44,900		$ 44,900
Affiliated entity | Spirit Realty Capital, Inc. | B-1 Term Loan
Related Party Transaction [Line Items]
Net book value from parent	$ 35,000		$ 35,000
Affiliated entity | Spirit Realty Capital, Inc.
Related Party Transaction [Line Items]
Number of real estate properties transferred | property		0	3
Net book value to parent			$ 2,100