SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Principles of Consolidation (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 10, 2021	Sep. 30, 2021	Dec. 31, 2020	Jun. 30, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Equity method investment, ownership percentage (as a percent)	6.30%
Equity Method Investments	$ 0			$ 48,677
Mitigation Bank
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Equity method investment, ownership percentage (as a percent)			30.00%		30.00%
Equity Method Investments				6,912
Land JV
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Equity method investment, ownership percentage (as a percent)		33.50%
Equity Method Investments				$ 41,765