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VARIABLE INTEREST ENTITIES, CONTINGENT LIABILITY AND CONSOLIDATED JOINT VENTURES - MCB Real Estate, LLC (Details) - Consolidated Joint Venture-VIEs - MCB Real Estate LLC And Its Affiliates | Sep. 30, 2021 USD ($) item | Dec. 31, 2020 USD ($) item
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Consolidated VIEs Carrying Amount of Assets and Liabilities |  |
Number of consolidated joint ventures | item | 3 | 3
Investment in consolidated joint ventures | $ | $ 4,730,000 | $ 7,495,000

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