| | 2020-01-31 | 2022-01-31 | 2023-01-31 | 2024-01-31 | 2025-01-31 | 2026-01-31 |
| Amortization Cash Flow | | | 16565000.0 | 18416000.0 | 26004000.0 | 31233000.0 |
| Amortization Of Intangibles | | | 16565000.0 | 18416000.0 | 26004000.0 | 31233000.0 |
| Amortization Of Securities | | | 0.0 | -2285000.0 | 2285000.0 | 0.0 |
| Beginning Cash Position | | | 1996633000.0 | 2456924000.0 | 3377597000.0 | 4324666000.0 |
| Capital Expenditure | | | -266437000.0 | -237112000.0 | -313821000.0 | -370859000.0 |
| Capital Expenditure Reported | | | -29095000.0 | -49457000.0 | -58969000.0 | -68751000.0 |
| Cash Flow From Continuing Financing Activities | | | 77437000.0 | 93158000.0 | 107208000.0 | 132452000.0 |
| Cash Flow From Continuing Investing Activities | | | -556658000.0 | -340650000.0 | -536588000.0 | -764479000.0 |
| Cash Flow From Continuing Operating Activities | | | 941007000.0 | 1166207000.0 | 1381727000.0 | 1612349000.0 |
| Change In Account Payable | | | -15463000.0 | -18898000.0 | 84939000.0 | -11267000.0 |
| Change In Accrued Expense | | | 124149000.0 | 79688000.0 | 304391000.0 | 84197000.0 |
| Change In Other Current Liabilities | | | -10364000.0 | -14035000.0 | -15657000.0 | -13692000.0 |
| Change In Other Working Capital | | | 527035000.0 | 324990000.0 | 84780000.0 | 320156000.0 |
| Change In Payable | | | -15463000.0 | -18898000.0 | 84939000.0 | -11267000.0 |
| Change In Payables And Accrued Expense | | | 108686000.0 | 60790000.0 | 389330000.0 | 72930000.0 |
| Change In Prepaid Assets | | | -46807000.0 | -102520000.0 | -190232000.0 | -206157000.0 |
| Change In Receivables | | | -258109000.0 | -217699000.0 | -274219000.0 | -232528000.0 |
| Change In Working Capital | | | 320441000.0 | 51526000.0 | -5998000.0 | -59291000.0 |
| Changes In Account Receivables | | | -258109000.0 | -217699000.0 | -274219000.0 | -232528000.0 |
| Changes In Cash | | | 461786000.0 | 918715000.0 | 952347000.0 | 980322000.0 |
| Common Stock Issuance | | 0.0 | | | | |
| Deferred Income Tax | | | 1306000.0 | -3387000.0 | -9903000.0 | -14797000.0 |
| Deferred Tax | | | 1306000.0 | -3387000.0 | -9903000.0 | -14797000.0 |
| Depreciation | | | 77245000.0 | 126838000.0 | 187952000.0 | 250218000.0 |
| Depreciation Amortization Depletion | | | 93810000.0 | 145254000.0 | 213956000.0 | 281451000.0 |
| Depreciation And Amortization | | | 93810000.0 | 145254000.0 | 213956000.0 | 281451000.0 |
| Effect Of Exchange Rate Changes | | | -1495000.0 | 1958000.0 | -5278000.0 | 9629000.0 |
| End Cash Position | | | 2456924000.0 | 3377597000.0 | 4324666000.0 | 5314617000.0 |
| Financing Cash Flow | | | 77437000.0 | 93158000.0 | 107208000.0 | 132452000.0 |
| Free Cash Flow | | | 674570000.0 | 929095000.0 | 1067906000.0 | 1241490000.0 |
| Gain Loss On Investment Securities | | | | -3936000.0 | -6321000.0 | -4161000.0 |
| Income Tax Paid Supplemental Data | | | 11943000.0 | 22608000.0 | 19022000.0 | 51464000.0 |
| Interest Paid Supplemental Data | | | 22551000.0 | 22500000.0 | 22500000.0 | 22500000.0 |
| Investing Cash Flow | | | -556658000.0 | -340650000.0 | -536588000.0 | -764479000.0 |
| Issuance Of Capital Stock | | 0.0 | | | | |
| Issuance Of Debt | | 0.0 | 0.0 | | | |
| Long Term Debt Issuance | | 0.0 | 0.0 | | | |
| Long Term Debt Payments | | 0.0 | -1591000.0 | 0.0 | 0.0 | |
| Net Business Purchase And Sale | | | -18349000.0 | -239030000.0 | -310257000.0 | -382268000.0 |
| Net Common Stock Issuance | | 0.0 | | | | |
| Net Income From Continuing Operations | | | -182285000.0 | 73439000.0 | -12566000.0 | -161165000.0 |
| Net Intangibles Purchase And Sale | | | -2323000.0 | -11126000.0 | 0.0 | 0.0 |
| Net Investment Purchase And Sale | | | -271872000.0 | 135492000.0 | 87490000.0 | -11352000.0 |
| Net Issuance Payments Of Debt | | 0.0 | -1591000.0 | 0.0 | 0.0 | |
| Net Long Term Debt Issuance | | 0.0 | -1591000.0 | 0.0 | 0.0 | |
| Net Other Financing Charges | | | 10954000.0 | 8088000.0 | 3609000.0 | 3455000.0 |
| Net PPEPurchase And Sale | | | -235019000.0 | -176529000.0 | -254852000.0 | -302108000.0 |
| Net Short Term Debt Issuance | 0.0 | | | | | |
| Operating Cash Flow | | | 941007000.0 | 1166207000.0 | 1381727000.0 | 1612349000.0 |
| Operating Gains Losses | | | | -3936000.0 | -6321000.0 | -4161000.0 |
| Other Non Cash Items | | | 183061000.0 | 255472000.0 | 337883000.0 | 472054000.0 |
| Proceeds From Stock Option Exercised | | | 68074000.0 | 85070000.0 | 103599000.0 | 128997000.0 |
| Purchase Of Business | | | -18349000.0 | -239030000.0 | -310257000.0 | -382268000.0 |
| Purchase Of Intangibles | | | -2323000.0 | -11126000.0 | 0.0 | 0.0 |
| Purchase Of Investment | | | -271872000.0 | -214789000.0 | -22423000.0 | -16776000.0 |
| Purchase Of PPE | | | -235019000.0 | -176529000.0 | -254852000.0 | -302108000.0 |
| Repayment Of Debt | | 0.0 | -1591000.0 | 0.0 | 0.0 | |
| Sale Of Investment | | | 0.0 | 350281000.0 | 109913000.0 | 5424000.0 |
| Short Term Debt Issuance | 0.0 | | | | | |
| Short Term Debt Payments | 0.0 | | | | | |
| Stock Based Compensation | | | 526504000.0 | 648665000.0 | 861391000.0 | 1096679000.0 |
| Unrealized Gain Loss On Investment Securities | | | -1830000.0 | 1459000.0 | 1000000.0 | 1579000.0 |
