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ACQUISITIONS - Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Sep. 30, 2019 | Aug. 02, 2019 | Jan. 03, 2019
--- | --- | --- | --- | ---
Wing |  |  |  |
Assets acquired and liabilities assumed |  |  |  |
Mineral interests in proved properties. |  |  | $ 58,084 |
Mineral interests in unproved properties |  |  | 84,976 |
Receivables |  |  | 1,867 |
Net assets acquired |  |  | 144,927 |
Wing | Preliminary |  |  |  |
Assets acquired and liabilities assumed |  |  |  |
Mineral interests in proved properties. |  |  | 55,619 |
Mineral interests in unproved properties |  |  | 87,441 |
Receivables |  |  | 1,867 |
Net assets acquired |  |  | 144,927 |
Wing | Adjustments |  |  |  |
Assets acquired and liabilities assumed |  |  |  |
Mineral interests in proved properties. |  |  | 2,465 |
Mineral interests in unproved properties |  |  | $ (2,465) |
AllDale I and II |  |  |  |
Assets acquired and liabilities assumed |  |  |  |
Cash and cash equivalents | $ 900 |  |  |
Mineral interests in proved properties. | 184,032 |  |  |
Mineral interests in unproved properties | 291,190 |  |  |
Receivables | 9,326 |  |  |
Accounts payable | (1,921) |  |  |
Net assets acquired | 483,527 |  |  |
Noncontrolling interest fair value |  |  |  | $ 12,300
AllDale I and II | Preliminary |  |  |  |
Assets acquired and liabilities assumed |  |  |  |
Cash and cash equivalents |  |  |  | 900
Mineral interests in proved properties. |  |  |  | 159,617
Mineral interests in unproved properties |  |  |  | 314,084
Receivables |  |  |  | 10,602
Accounts payable |  |  |  | (1,921)
Net assets acquired |  |  |  | $ 483,282
AllDale I and II | Adjustments |  |  |  |
Assets acquired and liabilities assumed |  |  |  |
Mineral interests in proved properties. | 24,415 |  |  |
Mineral interests in unproved properties | (22,894) |  |  |
Receivables | $ (1,276) | $ 1,300 |  |
Bluegrass Minerals | Cavalier Minerals |  |  |  |
Assets acquired and liabilities assumed |  |  |  |
Noncontrolling ownership interest (as a percent) | 4.00% |  |  | 4.00%

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