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Accounting Pronouncements Recently Adopted (Tables) | 6 Months Ended
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Jul. 31, 2018
Accounting Policies [Abstract] |
Schedule of Changes to Beginning of Period in the Consolidated Statement of Cash Flows | The changes to the beginning of period balances presented in the consolidated statement of cash flows are as follows (in thousands):
|  | January 31, 2018 |  | January 31, 2017 |
|  |  |  |  |  | As previously |  |  |  |  |  | As previously |
|  |  | As adjusted |  |  | reported |  |  | As adjusted |  |  | reported |
Cash and cash equivalents |  | $ | 214,811 |  | $ | 214,811 |  | $ | 256,279 |  | $ | 256,279 |
Restricted funds included in other non-current assets |  |  | 600 |  |  | — |  |  | 600 |  |  | — |
Beginning of period balance presented in the statement of cash flows |  | $ | 215,411 |  | $ | 214,811 |  | $ | 256,879 |  | $ | 256,279 |

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