| Share-based Payment Arrangement, Activity [Table Text Block] |
| Location |
|
Type of Award |
|
Shares Unvested at July 31, 2021 |
|
|
Weighted Average Fair Value |
|
|
Unrecognized Compensation Expense at July 31, 2021 |
|
Date Expense will be Recognized Through (Straight-Line Basis) |
| U.S. |
|
Time Based Only |
|
|
862,028 |
|
|
$ |
6.20 |
|
|
$ |
3,506,409 |
|
12/6/2023 |
| U.S. |
|
$6 Market/Time- Based |
|
|
150,697 |
|
|
$ |
3.86 |
|
|
$ |
- |
|
10/29/2020 |
| U.S. |
|
$6 Market/Time- Based |
|
|
191,985 |
|
|
$ |
8.65 |
|
|
$ |
443,476 |
|
3/29/2022 |
| U.S. |
|
$6 Market/Time- Based |
|
|
191,985 |
|
|
$ |
8.65 |
|
|
$ |
745,037 |
|
3/29/2023 |
| U.S. |
|
$6 Market/Time- Based |
|
|
191,997 |
|
|
$ |
8.65 |
|
|
$ |
923,485 |
|
3/29/2024 |
| U.S. |
|
$8 Market/Time- Based |
|
|
150,697 |
|
|
$ |
3.46 |
|
|
$ |
- |
|
10/29/2020 |
| U.S. |
|
$8 Market/Time- Based |
|
|
191,986 |
|
|
$ |
7.45 |
|
|
$ |
543,232 |
|
8/23/2022* |
| U.S. |
|
$8 Market/Time- Based |
|
|
191,986 |
|
|
$ |
7.45 |
|
|
$ |
726,916 |
|
8/23/2023* |
| U.S. |
|
$8 Market/Time- Based |
|
|
191,996 |
|
|
$ |
7.45 |
|
|
$ |
849,205 |
|
8/23/2024* |
| U.S. |
|
$10 Market/Time- Based |
|
|
150,706 |
|
|
$ |
3.15 |
|
|
$ |
- |
|
10/29/2020 |
| U.S. |
|
$10 Market/Time- Based |
|
|
191,991 |
|
|
$ |
6.46 |
|
|
$ |
511,665 |
|
7/9/2023 |
| U.S. |
|
$10 Market/Time- Based |
|
|
191,987 |
|
|
$ |
6.46 |
|
|
$ |
656,956 |
|
7/9/2024 |
| U.S. |
|
$10 Market/Time- Based |
|
|
192,004 |
|
|
$ |
6.46 |
|
|
$ |
755,069 |
|
7/9/2025 |
| U.S. |
|
$13 Market/Time- Based |
|
|
433 |
|
|
$ |
4.47 |
|
|
$ |
613 |
|
5/4/2022 |
| U.S. |
|
$13 Market/Time- Based |
|
|
433 |
|
|
$ |
4.47 |
|
|
$ |
912 |
|
5/4/2023 |
| U.S. |
|
$13 Market/Time- Based |
|
|
434 |
|
|
$ |
4.47 |
|
|
$ |
1,104 |
|
5/4/2024 |
| U.S. |
|
$16 Market/Time- Based |
|
|
433 |
|
|
$ |
3.85 |
|
|
$ |
624 |
|
8/27/2022 |
| U.S. |
|
$16 Market/Time- Based |
|
|
433 |
|
|
$ |
3.85 |
|
|
$ |
845 |
|
8/27/2023 |
| U.S. |
|
$16 Market/Time- Based |
|
|
434 |
|
|
$ |
3.85 |
|
|
$ |
991 |
|
8/27/2024 |
| U.S. |
|
$19 Market/Time- Based |
|
|
433 |
|
|
$ |
3.34 |
|
|
$ |
595 |
|
11/19/2022 |
| U.S. |
|
$19 Market/Time- Based |
|
|
433 |
|
|
$ |
3.34 |
|
|
$ |
766 |
|
11/19/2023 |
| U.S. |
|
$19 Market/Time- Based |
|
|
434 |
|
|
$ |
3.34 |
|
|
$ |
883 |
|
11/19/2024 |
| U.K. |
|
Time Based Only |
|
|
134,431 |
|
|
$ |
6.08 |
|
|
$ |
496,291 |
|
12/6/2023 |
| U.K. |
|
$6 Market/Time- Based |
|
|
28,885 |
|
|
$ |
3.85 |
|
|
$ |
- |
|
10/29/2020 |
| U.K. |
|
$6 Market/Time- Based |
|
|
27,892 |
|
|
$ |
8.36 |
|
|
$ |
63,685 |
|
3/29/2022 |
| U.K. |
|
$6 Market/Time- Based |
|
|
27,892 |
|
|
$ |
8.36 |
|
|
$ |
105,878 |
|
3/29/2023 |
| U.K. |
|
$6 Market/Time- Based |
|
|
27,901 |
|
|
$ |
8.36 |
|
|
$ |
130,820 |
|
3/29/2024 |
| U.K. |
|
$8 Market/Time- Based |
|
|
28,885 |
|
|
$ |
3.45 |
|
|
$ |
- |
|
10/29/2020 |
| U.K. |
|
$8 Market/Time- Based |
|
|
27,892 |
|
|
$ |
7.20 |
|
|
$ |
77,475 |
|
8/23/2022* |
| U.K. |
|
$8 Market/Time- Based |
|
|
27,892 |
|
|
$ |
7.20 |
|
|
$ |
103,082 |
|
8/23/2023* |
| U.K. |
|
$8 Market/Time- Based |
|
|
27,901 |
|
|
$ |
7.20 |
|
|
$ |
120,147 |
|
8/23/2024* |
| U.K. |
|
$10 Market/Time- Based |
|
|
28,886 |
|
|
$ |
3.14 |
|
|
$ |
- |
|
10/29/2020 |
| U.K. |
|
$10 Market/Time- Based |
|
|
27,902 |
|
|
$ |
6.24 |
|
|
$ |
72,869 |
|
7/9/2023 |
| U.K. |
|
$10 Market/Time- Based |
|
|
27,892 |
|
|
$ |
6.24 |
|
|
$ |
93,069 |
|
7/9/2024 |
| U.K. |
|
$10 Market/Time- Based |
|
|
27,901 |
|
|
$ |
6.24 |
|
|
$ |
106,761 |
|
7/9/2025 |
| Total |
|
|
3,518,097 |
|
|
|
|
|
|
$ |
11,038,860 |
|
|
|