Debt and Preferred Equity Investments - Investment In Financing Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Carrying value	$ 1,107,870	$ 1,088,723
2022	0
2021	142,264
2020	288,212
Prior	677,394
1 - Low Risk Assets - Low probability of loss
Financing Receivable, Credit Quality Indicator [Line Items]
Carrying value	517,330	644,489
2022	0
2021	142,264
2020	153,055
Prior	222,011
2 - Watch List Assets - Higher potential for loss
Financing Receivable, Credit Quality Indicator [Line Items]
Carrying value	583,650	437,344
2022	0
2021	0
2020	135,157
Prior	448,493
3 - High Risk Assets - Loss more likely than not
Financing Receivable, Credit Quality Indicator [Line Items]
Carrying value	6,890	$ 6,890
2022	0
2021	0
2020	0
Prior	$ 6,890