Leases - Cash Flow and Balance Sheet Info (Details) $ in Thousands  | 
6 Months Ended | 
|---|---|
| 
 Jul. 31, 2022  
USD ($) 
 | |
| Cash flow information | |
| Operating cash flows paid for operating leases | $ 3,778 | 
| Balance sheet information | |
| Operating lease right-of-use assets | 13,094 | 
| Short-term Debt | 6,525 | 
| Operating lease liabilities, long-term | 7,311 | 
| Total operating lease liabilities | $ 13,836 | 
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- References No definition available. 
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- References No definition available. 
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount of lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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