Stock-based compensation - Stock-based compensation expense (Details) - USD ($) $ in Thousands |
1 Months Ended | 2 Months Ended | 3 Months Ended | 4 Months Ended | 5 Months Ended | 7 Months Ended | 9 Months Ended | 12 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 12, 2021 |
Aug. 28, 2020 |
Jun. 11, 2021 |
Aug. 27, 2020 |
Jul. 31, 2021 |
Jul. 31, 2021 |
Oct. 31, 2020 |
Oct. 31, 2021 |
Apr. 30, 2021 |
Oct. 31, 2020 |
Jul. 31, 2020 |
Apr. 30, 2020 |
Jun. 11, 2021 |
Oct. 31, 2021 |
Aug. 27, 2020 |
Oct. 31, 2021 |
Oct. 31, 2020 |
Jan. 31, 2021 |
Jan. 31, 2020 |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||||||||||||||
| Share based compensation expense | $ 4,217 | $ 9,034 | |||||||||||||||||
| Financial Designation, Predecessor and Successor [Fixed List] | Successor | Predecessor | Predecessor | Predecessor | Successor | Successor | Predecessor | Successor | Predecessor | Predecessor | Predecessor | Predecessor | Predecessor | Successor | Predecessor | Predecessor | Predecessor | Predecessor | |
| Content and software development | |||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||||||||||||||
| Share based compensation expense | $ 276 | $ 530 | |||||||||||||||||
| Selling and marketing | |||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||||||||||||||
| Share based compensation expense | 621 | 947 | |||||||||||||||||
| General and administrative | |||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||||||||||||||
| Share based compensation expense | $ 3,320 | 7,557 | |||||||||||||||||
| Private Placement Warrants - CEO | |||||||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||||||||||||||
| Share based compensation expense | $ 2,800 | $ 2,800 | |||||||||||||||||
| Warrants issued and outstanding | 1,000,000 | 1,000,000 | 1,000,000 | ||||||||||||||||