| | 2021-01-31 | 2022-01-31 | 2023-01-31 | 2024-01-31 | 2025-01-31 |
| Amortization Of Securities | | 7540000.0 | -5954000.0 | -44556000.0 | -25059000.0 |
| Beginning Cash Position | | 430222000.0 | 474420000.0 | 456339000.0 | 803643000.0 |
| Capital Expenditure | | -8072000.0 | -7244000.0 | -6074000.0 | -29550000.0 |
| Cash Flow From Continuing Financing Activities | | 890892000.0 | 30200000.0 | 38241000.0 | 202060000.0 |
| Cash Flow From Continuing Investing Activities | | -852142000.0 | -33308000.0 | 188019000.0 | -657440000.0 |
| Cash Flow From Continuing Operating Activities | | 6980000.0 | -12970000.0 | 121477000.0 | 150191000.0 |
| Change In Account Payable | | 1146000.0 | 3163000.0 | 1679000.0 | 541000.0 |
| Change In Accrued Expense | | 59248000.0 | -16189000.0 | 39502000.0 | 25254000.0 |
| Change In Other Current Assets | | 233000.0 | -99000.0 | -211000.0 | -30677000.0 |
| Change In Other Current Liabilities | | -3147000.0 | -8892000.0 | -11858000.0 | -15895000.0 |
| Change In Other Working Capital | | 52499000.0 | 36682000.0 | -124241000.0 | -85489000.0 |
| Change In Payable | | 1146000.0 | 3163000.0 | 1679000.0 | 541000.0 |
| Change In Payables And Accrued Expense | | 60394000.0 | -13026000.0 | 41181000.0 | 25795000.0 |
| Change In Prepaid Assets | | -19865000.0 | 2315000.0 | -12208000.0 | -24813000.0 |
| Change In Receivables | | -62277000.0 | -91450000.0 | -41639000.0 | -69236000.0 |
| Change In Working Capital | | 27837000.0 | -74470000.0 | -148976000.0 | -200315000.0 |
| Changes In Account Receivables | | -62277000.0 | -91450000.0 | -41639000.0 | -69236000.0 |
| Changes In Cash | | 45730000.0 | -16078000.0 | 347737000.0 | -305189000.0 |
| Common Stock Issuance | 0.0 | 889184000.0 | 0.0 | 0.0 | |
| Deferred Income Tax | | -2579000.0 | -562000.0 | -1574000.0 | -16794000.0 |
| Deferred Tax | | -2579000.0 | -562000.0 | -1574000.0 | -16794000.0 |
| Depreciation | | 24455000.0 | 29182000.0 | 32125000.0 | 26973000.0 |
| Depreciation Amortization Depletion | | 24455000.0 | 29182000.0 | 32125000.0 | 26973000.0 |
| Depreciation And Amortization | | 24455000.0 | 29182000.0 | 32125000.0 | 26973000.0 |
| Effect Of Exchange Rate Changes | | -1532000.0 | -2003000.0 | -433000.0 | -5701000.0 |
| End Cash Position | | 474420000.0 | 456339000.0 | 803643000.0 | 492753000.0 |
| Financing Cash Flow | | 890892000.0 | 30200000.0 | 38241000.0 | 202060000.0 |
| Free Cash Flow | | -1092000.0 | -20214000.0 | 115403000.0 | 120641000.0 |
| Gain Loss On Investment Securities | | | -1857000.0 | -1044000.0 | -937000.0 |
| Income Tax Paid Supplemental Data | | 5672000.0 | 11164000.0 | 11991000.0 | 14976000.0 |
| Interest Paid Supplemental Data | | 6271000.0 | 5837000.0 | 5471000.0 | 3705000.0 |
| Investing Cash Flow | | -852142000.0 | -33308000.0 | 188019000.0 | -657440000.0 |
| Issuance Of Capital Stock | 0.0 | 889184000.0 | 0.0 | 0.0 | |
| Issuance Of Debt | 856000.0 | 0.0 | 0.0 | | |
| Long Term Debt Issuance | 856000.0 | 0.0 | 0.0 | | |
| Long Term Debt Payments | | -33166000.0 | -4510000.0 | -5483000.0 | -6179000.0 |
| Net Business Purchase And Sale | | -4469000.0 | 0.0 | -15000000.0 | 0.0 |
| Net Common Stock Issuance | 0.0 | 889184000.0 | 0.0 | 0.0 | |
| Net Foreign Currency Exchange Gain Loss | | 1519000.0 | 1260000.0 | 1802000.0 | -964000.0 |
| Net Income From Continuing Operations | | -306866000.0 | -345398000.0 | -176600000.0 | -129072000.0 |
| Net Investment Purchase And Sale | | -839601000.0 | -26064000.0 | 209093000.0 | -627890000.0 |
| Net Issuance Payments Of Debt | | -33166000.0 | -4510000.0 | -5483000.0 | -6179000.0 |
| Net Long Term Debt Issuance | | -33166000.0 | -4510000.0 | -5483000.0 | -6179000.0 |
| Net Other Financing Charges | -4154000.0 | | | | 170223000.0 |
| Net PPEPurchase And Sale | | -8072000.0 | -7244000.0 | -6074000.0 | -29550000.0 |
| Operating Cash Flow | | 6980000.0 | -12970000.0 | 121477000.0 | 150191000.0 |
| Operating Gains Losses | | 1519000.0 | -597000.0 | 758000.0 | -1901000.0 |
| Other Non Cash Items | | 4005000.0 | 3375000.0 | 3393000.0 | 2419000.0 |
| Proceeds From Stock Option Exercised | | 34874000.0 | 34710000.0 | 43724000.0 | 38016000.0 |
| Purchase Of Business | | -4469000.0 | 0.0 | -15000000.0 | 0.0 |
| Purchase Of Investment | | -1389601000.0 | -1451064000.0 | -1235907000.0 | -1425474000.0 |
| Purchase Of PPE | | -8072000.0 | -7244000.0 | -6074000.0 | -29550000.0 |
| Repayment Of Debt | | -33166000.0 | -4510000.0 | -5483000.0 | -6179000.0 |
| Sale Of Investment | | 550000000.0 | 1425000000.0 | 1445000000.0 | 797584000.0 |
| Stock Based Compensation | | 251069000.0 | 381454000.0 | 456907000.0 | 493940000.0 |
| Unrealized Gain Loss On Investment Securities | 0.0 | 0.0 | -1857000.0 | -1044000.0 | -937000.0 |
