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SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION (Tables) | 6 Months Ended
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Jul. 31, 2025
SUPPLEMENTAL FINANCIAL STATEMENT INFORMATION |
Schedule of other current assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | July 31, | ​ | January 31,
​ | ​ | 2025 |  | 2025
Income tax refunds receivable and prepaid income taxes | ​ | $ | 33,614 | ​ | $ | 30,881
Note receivable | ​ | ​ | 4,608 | ​ |  | 5,023
Prepaid expenses | ​ |  | 7,302 | ​ |  | 5,751
Raw materials inventory | ​ | ​ | 1,256 | ​ | ​ | 320
Other | ​ | ​ | 6,918 | ​ | ​ | 9,950
Total other current assets | ​ | $ | 53,698 | ​ | $ | 51,925
Schedule of accrued expenses | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | July 31, | ​ | January 31,
​ | ​ | 2025 |  | 2025
Accrued project costs | ​ | $ | 29,798 | ​ | $ | 31,620
Accrued compensation | ​ | ​ | 20,854 | ​ | ​ | 29,772
Lease liabilities | ​ | ​ | 2,378 | ​ | ​ | 2,710
Other | ​ | ​ | 18,423 | ​ | ​ | 19,217
Total accrued expenses | ​ | $ | 71,453 | ​ | $ | 83,319
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