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EQUITY AND MEZZANINE EQUITY - Schedule of Conversions of Common Stock (Details) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Conversion of Stock [Line Items] |  |  |  |
Net Book Basis | $ 0 | $ 0 | $ 0 | $ 0
Exercise of Exchange Rights |  |  |  |
Conversion of Stock [Line Items] |  |  |  |
Number of units (in shares) | 36 | 4 | 131 | 40
Net Book Basis | $ (3,233) | $ (462) | $ (2,815) | $ (344)

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- Definition Total change in each class of partners' capital accounts during the year due to redemptions and adjustments to redemption value. All partners include general, limited and preferred partners. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187171-122770 + Details
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