Restructuring - Restructuring charges (Details) - USD ($) $ in Thousands |
1 Months Ended | 2 Months Ended | 3 Months Ended | 4 Months Ended | 6 Months Ended | 12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 12, 2021 |
Jun. 11, 2021 |
Jul. 31, 2021 |
Jul. 31, 2021 |
Apr. 30, 2021 |
Jul. 31, 2020 |
Apr. 30, 2020 |
Jun. 11, 2021 |
Jul. 31, 2021 |
Jul. 31, 2020 |
Jan. 31, 2021 |
Jan. 31, 2020 |
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| Restructuring | ||||||||||||
| Restructuring charges incurred | $ (1,240) | $ 316 | $ 771 | $ (703) | $ 1,141 | |||||||
| Financial Designation, Predecessor and Successor [Fixed List] | Successor | Predecessor | Successor | Successor | Predecessor | Predecessor | Predecessor | Predecessor | Successor | Predecessor | Predecessor | Predecessor |
| X | ||||||||||
- Definition Indicates designation of financial information when substantially all business or separately identifiable line of business transfers from one entity to another entity. Acceptable values are "Predecessor" and "Successor". Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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