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RELATED PARTY TRANSACTIONS - Other (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Chairman | General and administrative expense |  |
Related Party Transactions |  |
Quarterly fees paid | $ 74,500 | $ 74,500
Vice Chairman |  |
Related Party Transactions |  |
Quarterly fees paid | 29,800 | 29,800
Gould Investors L.P. | Real estate expenses |  |
Related Party Transactions |  |
Insurance expense recognized of amounts reimbursed to related party | $ 281,000 | $ 246,000

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