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Note 4 - Fresh-start Reporting - Goodwill (Details) - USD ($) $ in Thousands | Jan. 31, 2023 | Jan. 31, 2022 | Jun. 11, 2021 | Jan. 31, 2021 | Aug. 27, 2020 | Jan. 31, 2020
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Reorganization value of Successor company |  |  |  |  | $ 1,503,735 |
Less: Fair value of Successor company assets |  |  |  |  | 1,008,600 |
Reorganization value of Successor company in excess of asset fair value - Goodwill | $ 457,744 | $ 795,811 | $ 491,519 | $ 491,653 | $ 495,135 | $ 1,112,820

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