Real Estate - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Real Estate [Abstract]
Net gain on sales of real estate properties	$ 144,266	$ 138,856	$ 352,243	$ 138,835