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Derivative Instruments - Offsetting Assets (Details) - USD ($) $ in Thousands | Oct. 31, 2021 | Jan. 31, 2021
--- | --- | ---
Offsetting Assets [Line Items] |  |
Gross Amounts of Recognized Assets | $ 24,166 | $ 3,221
Gross Amounts Offset on the Condensed Consolidated Balance Sheets | 0 |
Net Amounts of Assets Presented on the Condensed Consolidated Balance Sheets | 24,166 |
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Financial Instruments | (24,166) |
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Cash Collateral Received | 0 |
Net Assets Exposed | 0 |
Counterparty A |  |
Offsetting Assets [Line Items] |  |
Gross Amounts of Recognized Assets | 1,879 |
Gross Amounts Offset on the Condensed Consolidated Balance Sheets | 0 |
Net Amounts of Assets Presented on the Condensed Consolidated Balance Sheets | 1,879 |
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Financial Instruments | (1,879) |
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Cash Collateral Received | 0 |
Net Assets Exposed | 0 |
Counterparty B |  |
Offsetting Assets [Line Items] |  |
Gross Amounts of Recognized Assets | 7,714 |
Gross Amounts Offset on the Condensed Consolidated Balance Sheets | 0 |
Net Amounts of Assets Presented on the Condensed Consolidated Balance Sheets | 7,714 |
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Financial Instruments | (7,714) |
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Cash Collateral Received | 0 |
Net Assets Exposed | 0 |
Counterparty C |  |
Offsetting Assets [Line Items] |  |
Gross Amounts of Recognized Assets | 4,961 |
Gross Amounts Offset on the Condensed Consolidated Balance Sheets | 0 |
Net Amounts of Assets Presented on the Condensed Consolidated Balance Sheets | 4,961 |
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Financial Instruments | (4,961) |
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Cash Collateral Received | 0 |
Net Assets Exposed | 0 |
Counterparty D |  |
Offsetting Assets [Line Items] |  |
Gross Amounts of Recognized Assets | 8,465 |
Gross Amounts Offset on the Condensed Consolidated Balance Sheets | 0 |
Net Amounts of Assets Presented on the Condensed Consolidated Balance Sheets | 8,465 |
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Financial Instruments | (8,465) |
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Cash Collateral Received | 0 |
Net Assets Exposed | 0 |
Counterparty E |  |
Offsetting Assets [Line Items] |  |
Gross Amounts of Recognized Assets | 1,147 |
Gross Amounts Offset on the Condensed Consolidated Balance Sheets | 0 |
Net Amounts of Assets Presented on the Condensed Consolidated Balance Sheets | 1,147 |
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Financial Instruments | (1,147) |
Gross Amounts Not Offset in the Condensed Consolidated Balance Sheets, Cash Collateral Received | 0 |
Net Assets Exposed | $ 0 |

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