SUBSEQUENT EVENTS (Details)	May 14, 2021 USD ($)	May 06, 2021 USD ($) partner	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)
Subsequent Event
Equity method investments			$ 4,475,000	$ 5,208,000
Subsequent Event | The Trust | ATM | Preferred Stock
Subsequent Event
Sale of stock, agent commission	$ 0.030
Subsequent Event | The Trust | Maximum | ATM | Preferred Stock
Subsequent Event
Shares authorized for distribution, value	$ 8,000,000
Subsequent Event | C JV II
Subsequent Event
Equity method investments		$ 408,000,000
Number of institutional partners (partner) | partner		3
Capital commitment		$ 8,000,000
Subsequent Event | C JV II | Institutional Investor Partners
Subsequent Event
Capital commitment		108,000,000
Subsequent Event | C JV II | Institutional Investor Partners | Maximum
Subsequent Event
Capital commitment		300,000,000
Subsequent Event | C JV II | CAM
Subsequent Event
Capital commitment		53,000,000
Subsequent Event | C JV II | MRC
Subsequent Event
Capital commitment		$ 45,000,000
Subsequent Event | CAM
Subsequent Event
Asset management function in exchange interest		90.00%