Leases - Schedule of Cumulative Effect of Changes to Condensed Consolidated Balance Sheet for Adoption of Topic 842 (Detail) - USD ($)
$ in Thousands |
Apr. 30, 2019 |
Feb. 01, 2019 |
Jan. 31, 2019 |
| Leases Disclosure [Line Items] |
|
|
|
| Operating lease right-of-use assets |
$ 7,911
|
|
$ 0
|
| Prepaid expenses and other current assets |
5,025
|
|
6,206
|
| Accrued and other current liabilities |
22,523
|
|
24,700
|
| Operating lease liabilities, current |
2,390
|
|
0
|
| Operating lease liabilities, non-current |
$ 5,635
|
|
$ 0
|
| Leases (Topic 842) [Member] |
|
|
|
| Leases Disclosure [Line Items] |
|
|
|
| Operating lease right-of-use assets |
|
$ 8,581
|
|
| Prepaid expenses and other current assets |
|
6,032
|
|
| Accrued and other current liabilities |
|
24,421
|
|
| Operating lease liabilities, current |
|
2,534
|
|
| Operating lease liabilities, non-current |
|
6,152
|
|
| Leases (Topic 842) [Member] | Restatement Adjustment [Member] |
|
|
|
| Leases Disclosure [Line Items] |
|
|
|
| Operating lease right-of-use assets |
|
8,581
|
|
| Prepaid expenses and other current assets |
|
(174)
|
|
| Accrued and other current liabilities |
|
(279)
|
|
| Operating lease liabilities, current |
|
2,534
|
|
| Operating lease liabilities, non-current |
|
$ 6,152
|
|