| | 2019-12-31 | 2020-06-30 | 2020-12-31 | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-09-30 |
| Amortization Of Securities | | | 10381000.0 | 26847000.0 | 12767000.0 | -33518000.0 | -55738000.0 |
| Beginning Cash Position | | | 1115515000.0 | 897454000.0 | 625050000.0 | 675978000.0 | 1749676000.0 |
| Capital Expenditure | | | -15384000.0 | -64736000.0 | -44644000.0 | -34434000.0 | -25590000.0 |
| Cash Flow From Continuing Financing Activities | | | -346339000.0 | -360882000.0 | -654601000.0 | -83749000.0 | -293102000.0 |
| Cash Flow From Continuing Investing Activities | | | -608802000.0 | -925562000.0 | 216327000.0 | -687454000.0 | -1484370000.0 |
| Cash Flow From Continuing Operating Activities | | | 735114000.0 | 1015856000.0 | 492813000.0 | 2034014000.0 | 3203736000.0 |
| Change In Account Payable | | | 41161000.0 | 66681000.0 | 31436000.0 | 198612000.0 | 22867000.0 |
| Change In Accrued Expense | 16366000.0 | | 2728000.0 | 83524000.0 | 66586000.0 | | |
| Change In Income Tax Payable | 23523000.0 | 25944000.0 | 28617000.0 | 6223000.0 | 44026000.0 | | |
| Change In Inventory | | | -235318000.0 | -170449000.0 | -638948000.0 | -655474000.0 | 123576000.0 |
| Change In Other Current Assets | | 1883000.0 | 4965000.0 | -130222000.0 | -117465000.0 | -66401000.0 | -120898000.0 |
| Change In Other Current Liabilities | | | 17102000.0 | 78187000.0 | 70704000.0 | 123694000.0 | 133747000.0 |
| Change In Other Working Capital | | | 50352000.0 | 275896000.0 | 142983000.0 | 485126000.0 | 1046341000.0 |
| Change In Payable | | | 69778000.0 | 66681000.0 | 31436000.0 | 198612000.0 | 22867000.0 |
| Change In Payables And Accrued Expense | | | 72506000.0 | 66681000.0 | 31436000.0 | 198612000.0 | -179179000.0 |
| Change In Prepaid Assets | 54259000.0 | | -5966000.0 | -134814000.0 | -85166000.0 | | |
| Change In Receivables | | | 10673000.0 | -126969000.0 | -401531000.0 | -101473000.0 | -282351000.0 |
| Change In Tax Payable | 23523000.0 | 25944000.0 | 28617000.0 | 6223000.0 | 44026000.0 | | |
| Change In Working Capital | | | -85686000.0 | -6876000.0 | -912821000.0 | -15916000.0 | 721236000.0 |
| Changes In Account Receivables | | | 10673000.0 | -126969000.0 | -401531000.0 | -101473000.0 | -282351000.0 |
| Changes In Cash | | | -220027000.0 | -270588000.0 | 54539000.0 | 1262811000.0 | 1426264000.0 |
| Common Stock Payments | | | -395173000.0 | -411645000.0 | -670287000.0 | -112279000.0 | -299823000.0 |
| Deferred Income Tax | | | -9144000.0 | -99290000.0 | -244382000.0 | -370796000.0 | -530033000.0 |
| Deferred Tax | | | -9144000.0 | -99290000.0 | -244382000.0 | -370796000.0 | -530033000.0 |
| Depreciation | | | 35158000.0 | 50334000.0 | 62700000.0 | 70630000.0 | |
| Depreciation Amortization Depletion | | | 35158000.0 | 50334000.0 | 62700000.0 | 70630000.0 | 61047000.0 |
| Depreciation And Amortization | | | 35158000.0 | 50334000.0 | 62700000.0 | 70630000.0 | 61047000.0 |
| Effect Of Exchange Rate Changes | | | 1966000.0 | -1816000.0 | -3611000.0 | 675000.0 | 598000.0 |
| End Cash Position | | | 897454000.0 | 625050000.0 | 675978000.0 | 1939464000.0 | 3175940000.0 |
| Financing Cash Flow | | | -346339000.0 | -360882000.0 | -654601000.0 | -83749000.0 | -293102000.0 |
| Free Cash Flow | | | 719730000.0 | 951120000.0 | 448169000.0 | 1999580000.0 | 3178146000.0 |
| Gain Loss On Investment Securities | | | -9432000.0 | | -27479000.0 | -18699000.0 | |
| Income Tax Paid Supplemental Data | | | 82601000.0 | 189774000.0 | 427846000.0 | 686155000.0 | |
| Interest Paid Supplemental Data | 0.0 | | 0.0 | | | | |
| Investing Cash Flow | | | -608802000.0 | -925562000.0 | 216327000.0 | -687454000.0 | -1484370000.0 |
| Long Term Debt Payments | 0.0 | | 0.0 | | | | |
| Net Business Purchase And Sale | | | -224021000.0 | 1299000.0 | -145087000.0 | 1799000.0 | |
| Net Common Stock Issuance | | | -395173000.0 | -411645000.0 | -670287000.0 | -112279000.0 | -299823000.0 |
| Net Income From Continuing Operations | | | 634557000.0 | 840854000.0 | 1352446000.0 | 2087321000.0 | 2664694000.0 |
| Net Investment Purchase And Sale | | | -369397000.0 | -862125000.0 | 406058000.0 | -654819000.0 | -1456402000.0 |
| Net Issuance Payments Of Debt | 0.0 | | 0.0 | | | | |
| Net Long Term Debt Issuance | 0.0 | | 0.0 | | | | |
| Net Other Financing Charges | | | -8722000.0 | -16482000.0 | -32725000.0 | -33563000.0 | -57076000.0 |
| Net Other Investing Changes | | | | 1299000.0 | | | |
| Net PPEPurchase And Sale | | | -15384000.0 | -64736000.0 | -44644000.0 | -34434000.0 | -25590000.0 |
| Operating Cash Flow | | | 735114000.0 | 1015856000.0 | 492813000.0 | 2034014000.0 | 3203736000.0 |
| Operating Gains Losses | | | -9432000.0 | | -27479000.0 | -18699000.0 | |
| Other Non Cash Items | | | 16970000.0 | 17112000.0 | 18648000.0 | 18236000.0 | 25241000.0 |
| Proceeds From Stock Option Exercised | | | 57556000.0 | 67245000.0 | 48411000.0 | 62093000.0 | 63797000.0 |
| Purchase Of Business | -1365000.0 | | -227420000.0 | -19933000.0 | -145087000.0 | | |
| Purchase Of Investment | | | -2688064000.0 | -2337197000.0 | -1431548000.0 | -2610042000.0 | -3269304000.0 |
| Purchase Of PPE | | | -15384000.0 | -64736000.0 | -44644000.0 | -34434000.0 | -25590000.0 |
| Repayment Of Debt | 0.0 | | 0.0 | | | | |
| Repurchase Of Capital Stock | | | -395173000.0 | -411645000.0 | -670287000.0 | -112279000.0 | -299823000.0 |
| Sale Of Business | 28220000.0 | | 3399000.0 | 1299000.0 | | 1799000.0 | |
| Sale Of Investment | | | 2318667000.0 | 1475072000.0 | 1837606000.0 | 1955223000.0 | 1812902000.0 |
| Stock Based Compensation | | | 137042000.0 | 186875000.0 | 230934000.0 | 296756000.0 | 335988000.0 |
| Unrealized Gain Loss On Investment Securities | -5427000.0 | | -4164000.0 | 0.0 | -27479000.0 | | |
