Other Real Estate Investments - Interest and Other Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Real Estate Properties [Line Items]
Interest and other income	$ 2,156	$ 2,643	$ 4,345
Mezzanine loan receivable
Real Estate Properties [Line Items]
Interest and other income	1,825	305	0
Mortgage loans receivable
Real Estate Properties [Line Items]
Interest and other income	0	2,044	2,838
Preferred equity investments
Real Estate Properties [Line Items]
Interest and other income	0	24	1,343
Other
Real Estate Properties [Line Items]
Interest and other income	$ 331	$ 270	$ 164