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EQUITY (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Sep. 30, 2017 | Sep. 30, 2019
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  |  |  |  |  | 20.00% |  |  |
Business Combination, Consideration Transferred |  |  |  |  | $ 195,000 |  |  |  |
Common Stock, Dividends, Per Share, Cash Paid |  | $ 0.89 | $ 0.865 | $ 0.86 | $ 0.825 | $ 0.795 | $ 0.77 |  |
Dividends, Preferred Stock, Cash |  | $ 300 | $ 300 | $ 300 |  |  |  |  |
Preferred Stock, Dividends, Declared |  | $ 275 | $ 275 | $ 275 | $ 275 | $ 275 | $ 275 |  |
Stock Issued During Period, Shares, New Issues |  |  |  |  |  |  | 21,900,000 |  |
Proceeds from Issuance or Sale of Equity |  |  |  |  |  |  | $ 1,200,000 |  |
Aggregate Amount Of Common Shares Available For Issuance And Sale Under Equity Distribution Agreement |  |  |  |  |  |  |  | $ 1,000,000 |
Issued Under Equity Agreement [Member] |  |  |  |  |  |  |  |  |
Common Stock Sold Under Equity Distribution Agreement |  |  |  |  |  |  |  |  | 0
Series E Preferred Stock [Member] |  |  |  |  |  |  |  |  |
Preferred Stock, Dividend Rate, Percentage |  |  |  |  |  |  |  |  | 5.50%
Subsequent Event [Member] |  |  |  |  |  |  |  |  |
Common Stock, Dividends, Per Share, Declared | $ 0.915 |  |  |  |  |  |  |  |
Dividends Payable, Date of Record | Nov. 04, 2019 |  |  |  |  |  |  |  |
Dividends Payable, Date to be Paid | Nov. 14, 2019 |  |  |  |  |  |  |  |
Preferred Stock, Dividends, Declared | $ 300 |  |  |  |  |  |  |  |

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