| | 2021-09-30 | 2022-09-30 | 2023-09-30 | 2024-09-30 | 2025-06-30 | 2025-09-30 |
| Beginning Cash Position | | 327047000.0 | 272888000.0 | 288798000.0 | 248322000.0 | 266466000.0 |
| Capital Expenditure | | -25947000.0 | -23814000.0 | -14378000.0 | -15989000.0 | -11008000.0 |
| Capital Expenditure Reported | | | | | | -11008000.0 |
| Cash Flow From Continuing Financing Activities | | -264081000.0 | 268313000.0 | -650725000.0 | -861413000.0 | -908509000.0 |
| Cash Flow From Continuing Investing Activities | | -201201000.0 | -866115000.0 | -124814000.0 | -53896000.0 | -38293000.0 |
| Cash Flow From Continuing Operating Activities | | 435326000.0 | 610861000.0 | 749984000.0 | 861780000.0 | 867696000.0 |
| Change In Account Payable | | 6957000.0 | 15918000.0 | -24368000.0 | -37110000.0 | -636000.0 |
| Change In Accrued Expense | | -6645000.0 | 7845000.0 | 8404000.0 | | 20526000.0 |
| Change In Income Tax Payable | | -15329000.0 | 4639000.0 | 65006000.0 | 89210000.0 | 89856000.0 |
| Change In Other Current Assets | | -40643000.0 | 6974000.0 | -16137000.0 | -650000.0 | -8458000.0 |
| Change In Other Current Liabilities | | -13610000.0 | -1929000.0 | -13245000.0 | -4676000.0 | -10345000.0 |
| Change In Other Working Capital | | 19169000.0 | 74249000.0 | 64417000.0 | -35290000.0 | -158014000.0 |
| Change In Payable | | -8372000.0 | 20557000.0 | 40638000.0 | 52100000.0 | 89220000.0 |
| Change In Payables And Accrued Expense | | -15017000.0 | 28402000.0 | 49042000.0 | 60504000.0 | 109746000.0 |
| Change In Receivables | | -165006000.0 | -98607000.0 | -34629000.0 | 7506000.0 | -121052000.0 |
| Change In Tax Payable | | -15329000.0 | 4639000.0 | 65006000.0 | 89210000.0 | 89856000.0 |
| Change In Working Capital | | -215107000.0 | 9089000.0 | 49448000.0 | 27394000.0 | -188123000.0 |
| Changes In Account Receivables | | -165006000.0 | -98607000.0 | -34629000.0 | 7506000.0 | -121052000.0 |
| Changes In Cash | | -29956000.0 | 13059000.0 | -25555000.0 | -53529000.0 | -79106000.0 |
| Common Stock Issuance | | 21207000.0 | 21652000.0 | 25674000.0 | 26272000.0 | 26062000.0 |
| Common Stock Payments | | -125000000.0 | 0.0 | 0.0 | -224987000.0 | -299998000.0 |
| Deferred Income Tax | | 42963000.0 | 16676000.0 | -39040000.0 | | -26283000.0 |
| Deferred Tax | | 42963000.0 | 16676000.0 | -39040000.0 | | -26283000.0 |
| Depreciation | | 122040000.0 | 137162000.0 | 141407000.0 | 138254000.0 | 135416000.0 |
| Depreciation Amortization Depletion | | 122040000.0 | 137162000.0 | 141407000.0 | 138254000.0 | 135416000.0 |
| Depreciation And Amortization | | 122040000.0 | 137162000.0 | 141407000.0 | 138254000.0 | 135416000.0 |
| Effect Of Exchange Rate Changes | | -24203000.0 | 2851000.0 | 3223000.0 | 5101000.0 | -2372000.0 |
| End Cash Position | | 272888000.0 | 288798000.0 | 266466000.0 | 194793000.0 | 184988000.0 |
| Financing Cash Flow | | -264081000.0 | 268313000.0 | -650725000.0 | -861413000.0 | -908509000.0 |
| Free Cash Flow | | 409379000.0 | 587047000.0 | 735606000.0 | 845791000.0 | 856688000.0 |
| Gain Loss On Investment Securities | -68829000.0 | 31854000.0 | | | | |
| Gain Loss On Sale Of Business | 0.0 | -29808000.0 | 0.0 | 0.0 | | |
| Interest Paid Supplemental Data | | | | | | 77828000.0 |
| Investing Cash Flow | | -201201000.0 | -866115000.0 | -124814000.0 | -53896000.0 | -38293000.0 |
| Issuance Of Capital Stock | | 21207000.0 | 21652000.0 | 25674000.0 | 26272000.0 | 26062000.0 |
| Issuance Of Debt | | 264000000.0 | 1540000000.0 | 1084845000.0 | 1000000000.0 | 860000000.0 |
| Long Term Debt Issuance | | 264000000.0 | 1540000000.0 | 1084845000.0 | 1000000000.0 | 860000000.0 |
| Long Term Debt Payments | | -355297000.0 | -1197000000.0 | -1038921000.0 | -1579915000.0 | -1412958000.0 |
| Net Business Purchase And Sale | | -250425000.0 | -828271000.0 | -93457000.0 | -6532000.0 | -6532000.0 |
| Net Common Stock Issuance | | -103793000.0 | 21652000.0 | 25674000.0 | -198715000.0 | -273936000.0 |
| Net Income From Continuing Operations | | 313081000.0 | 245540000.0 | 376333000.0 | 512727000.0 | 733997000.0 |
| Net Intangibles Purchase And Sale | -550000.0 | -6451000.0 | -800000.0 | -3990000.0 | | |
| Net Investment Purchase And Sale | | 71763000.0 | -7602000.0 | -13078000.0 | -31464000.0 | -20753000.0 |
| Net Issuance Payments Of Debt | | -91297000.0 | 343000000.0 | 45924000.0 | -579915000.0 | -552958000.0 |
| Net Long Term Debt Issuance | | -91297000.0 | 343000000.0 | 45924000.0 | -579915000.0 | -552958000.0 |
| Net Other Financing Charges | | -68991000.0 | -96339000.0 | -722323000.0 | -82783000.0 | -81615000.0 |
| Net Other Investing Changes | | 3408000.0 | -6428000.0 | -3901000.0 | | |
| Net PPEPurchase And Sale | | -19496000.0 | -23814000.0 | -14378000.0 | -11999000.0 | -11008000.0 |
| Net Short Term Debt Issuance | 432000000.0 | | | | | |
| Operating Cash Flow | | 435326000.0 | 610861000.0 | 749984000.0 | 861780000.0 | 867696000.0 |
| Operating Gains Losses | -68829000.0 | 2046000.0 | | | | |
| Other Non Cash Items | | -4560000.0 | -4065000.0 | -1625000.0 | -1169000.0 | -3516000.0 |
| Purchase Of Business | | -282943000.0 | -828271000.0 | -93457000.0 | -6532000.0 | -6532000.0 |
| Purchase Of Intangibles | -550000.0 | -6451000.0 | -800000.0 | -3990000.0 | | |
| Purchase Of Investment | | 0.0 | -7602000.0 | -13078000.0 | -27638000.0 | -20753000.0 |
| Purchase Of PPE | | -19496000.0 | -23814000.0 | -14378000.0 | -11999000.0 | -11008000.0 |
| Repayment Of Debt | | -355297000.0 | -1197000000.0 | -1038921000.0 | -1579915000.0 | -1412958000.0 |
| Repurchase Of Capital Stock | | -125000000.0 | 0.0 | 0.0 | -224987000.0 | -299998000.0 |
| Sale Of Business | 0.0 | 32518000.0 | | 0.0 | | |
| Sale Of Investment | 66996000.0 | 71763000.0 | 349000.0 | 0.0 | | |
| Short Term Debt Issuance | 600000000.0 | | | | | |
| Short Term Debt Payments | -168000000.0 | | | | | |
| Stock Based Compensation | | 174863000.0 | 206459000.0 | 223461000.0 | 223614000.0 | 216205000.0 |