Convertible Senior Notes - Interest Expense Recognized (Details) - USD ($)
$ in Thousands |
3 Months Ended |
6 Months Ended |
Jan. 31, 2022 |
Jan. 31, 2021 |
Jan. 31, 2022 |
Jan. 31, 2021 |
| Debt Instrument [Line Items] |
|
|
|
|
| Non-cash interest expense |
|
|
$ 9,575
|
$ 6,615
|
| Convertible Debt | 2023 Convertible Senior Notes |
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
| Interest expense related to amortization of debt discount |
$ 0
|
$ 7,854
|
0
|
15,579
|
| Interest expense related to amortization of debt issuance costs |
148
|
438
|
548
|
869
|
| Total interest expense |
148
|
8,292
|
548
|
16,448
|
| Convertible Debt | 2026 Convertible Senior Notes |
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
| Interest expense related to amortization of debt discount |
8,469
|
7,894
|
16,789
|
11,081
|
| Interest expense related to amortization of debt issuance costs |
968
|
902
|
1,919
|
1,267
|
| Non-cash interest expense |
4,802
|
4,663
|
9,575
|
6,615
|
| Total interest expense |
14,239
|
$ 13,459
|
28,283
|
$ 18,963
|
| Convertible Debt | 2027 Convertible Senior Notes |
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
| Contractual interest expense |
359
|
|
540
|
|
| Interest expense related to amortization of debt issuance costs |
380
|
|
511
|
|
| Total interest expense |
$ 739
|
|
$ 1,051
|
|