Real Estate - Acquired Properties From Unaffiliated Parties (Parenthetical) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Purchase Price	$ 1,514,521	$ 707,005
Land [Member]
Purchase Price	268,300	113,700
Depreciable Property [Member]
Purchase Price	1,229,000	$ 594,400
Vacant Land [Member]
Purchase Price	16,700
Construction in Progress [Member]
Purchase Price	$ 4,900