| | 2021-12-31 | 2022-12-31 | 2023-12-31 | 2024-12-31 | 2025-03-31 |
| Beginning Cash Position | 608050000.0 | 625567000.0 | 572664000.0 | 611672000.0 | 535164000.0 |
| Capital Expenditure | -50616000.0 | -51872000.0 | -52448000.0 | -56565000.0 | -58366000.0 |
| Capital Expenditure Reported | -33123000.0 | -38730000.0 | -43122000.0 | -46623000.0 | -47691000.0 |
| Cash Dividends Paid | -99792000.0 | -105942000.0 | -109658000.0 | -112697000.0 | -112681000.0 |
| Cash Flow From Continuing Financing Activities | -189775000.0 | -242378000.0 | -147057000.0 | -201377000.0 | -225900000.0 |
| Cash Flow From Continuing Investing Activities | -67694000.0 | -86272000.0 | -155290000.0 | -86935000.0 | -88253000.0 |
| Cash Flow From Continuing Operating Activities | 282091000.0 | 289231000.0 | 333767000.0 | 385237000.0 | 419815000.0 |
| Change In Account Payable | 96214000.0 | 86052000.0 | 220691000.0 | -314686000.0 | -146037000.0 |
| Change In Accrued Expense | -2607000.0 | -3417000.0 | 1466000.0 | 7049000.0 | 1756000.0 |
| Change In Income Tax Payable | -5638000.0 | -4768000.0 | -14691000.0 | -3284000.0 | 78012000.0 |
| Change In Other Current Assets | -5574000.0 | -49527000.0 | -25248000.0 | -629000.0 | -884000.0 |
| Change In Other Current Liabilities | -7001000.0 | -6373000.0 | -6735000.0 | -8730000.0 | -8701000.0 |
| Change In Other Working Capital | -2306000.0 | 1813000.0 | -1103000.0 | -621000.0 | 745000.0 |
| Change In Payable | 90576000.0 | 81284000.0 | 206000000.0 | -317970000.0 | -68025000.0 |
| Change In Payables And Accrued Expense | 87969000.0 | 77867000.0 | 207466000.0 | -310921000.0 | -66269000.0 |
| Change In Prepaid Assets | 2214000.0 | -4249000.0 | -11898000.0 | 1009000.0 | 7902000.0 |
| Change In Receivables | -141311000.0 | -62767000.0 | -188160000.0 | 316361000.0 | 159195000.0 |
| Change In Tax Payable | -5638000.0 | -4768000.0 | -14691000.0 | -3284000.0 | 78012000.0 |
| Change In Working Capital | -66009000.0 | -43236000.0 | -25678000.0 | -3531000.0 | 91988000.0 |
| Changes In Account Receivables | -141311000.0 | -62767000.0 | -188160000.0 | 316361000.0 | 159195000.0 |
| Changes In Cash | 24622000.0 | -39419000.0 | 31420000.0 | 96925000.0 | 105662000.0 |
| Common Stock Dividend Paid | -99792000.0 | -105942000.0 | -109658000.0 | -112697000.0 | -112681000.0 |
| Common Stock Payments | -63189000.0 | -87540000.0 | 0.0 | -75474000.0 | -103404000.0 |
| Deferred Income Tax | 3118000.0 | -6547000.0 | -5815000.0 | -3878000.0 | -2664000.0 |
| Deferred Tax | 3118000.0 | -6547000.0 | -5815000.0 | -3878000.0 | -2664000.0 |
| Depreciation | 60246000.0 | 67154000.0 | 76410000.0 | 80463000.0 | 80663000.0 |
| Depreciation Amortization Depletion | 60246000.0 | 67154000.0 | 76410000.0 | 80463000.0 | 80663000.0 |
| Depreciation And Amortization | 60246000.0 | 67154000.0 | 76410000.0 | 80463000.0 | 80663000.0 |
| Effect Of Exchange Rate Changes | -7105000.0 | -13484000.0 | 7588000.0 | -8138000.0 | 3628000.0 |
| End Cash Position | 625567000.0 | 572664000.0 | 611672000.0 | 700459000.0 | 640826000.0 |
| Financing Cash Flow | -189775000.0 | -242378000.0 | -147057000.0 | -201377000.0 | -225900000.0 |
| Free Cash Flow | 231475000.0 | 237359000.0 | 281319000.0 | 328672000.0 | 361449000.0 |
| Income Tax Paid Supplemental Data | 70003000.0 | 88677000.0 | 94814000.0 | 96932000.0 | |
| Interest Paid Supplemental Data | 830000.0 | 652000.0 | 1870000.0 | 1717000.0 | 1484000.0 |
| Investing Cash Flow | -67694000.0 | -86272000.0 | -155290000.0 | -86935000.0 | -88253000.0 |
| Issuance Of Debt | 70348000.0 | 100000000.0 | 123995000.0 | 344925000.0 | |
| Net Business Purchase And Sale | -17078000.0 | -34400000.0 | -78476000.0 | 0.0 | |
| Net Common Stock Issuance | -63189000.0 | -87540000.0 | 0.0 | -75474000.0 | -103404000.0 |
| Net Foreign Currency Exchange Gain Loss | 0.0 | -8783000.0 | 4718000.0 | 1276000.0 | 2780000.0 |
| Net Income From Continuing Operations | 257888000.0 | 250224000.0 | 258055000.0 | 274181000.0 | 216631000.0 |
| Net Investment Purchase And Sale | 0.0 | 0.0 | -24366000.0 | -30370000.0 | -29887000.0 |
| Net Issuance Payments Of Debt | 0.0 | 0.0 | 0.0 | 0.0 | |
| Net Other Financing Charges | -33890000.0 | -49568000.0 | -38339000.0 | -16194000.0 | -10826000.0 |
| Net PPEPurchase And Sale | -17493000.0 | -13142000.0 | -9326000.0 | -9942000.0 | -10675000.0 |
| Net Short Term Debt Issuance | 0.0 | 0.0 | 0.0 | 0.0 | |
| Operating Cash Flow | 282091000.0 | 289231000.0 | 333767000.0 | 385237000.0 | 419815000.0 |
| Operating Gains Losses | | -8783000.0 | 4718000.0 | 1276000.0 | 2780000.0 |
| Other Non Cash Items | -466000.0 | 555000.0 | -3113000.0 | 7042000.0 | 503000.0 |
| Proceeds From Stock Option Exercised | 7096000.0 | 672000.0 | 940000.0 | 2988000.0 | 1011000.0 |
| Purchase Of Business | -17078000.0 | -34400000.0 | -78476000.0 | 0.0 | |
| Purchase Of Investment | 0.0 | 0.0 | -28818000.0 | -42810000.0 | -43296000.0 |
| Purchase Of PPE | -17493000.0 | -13142000.0 | -9326000.0 | -9942000.0 | -10675000.0 |
| Repayment Of Debt | -70348000.0 | -100000000.0 | -123995000.0 | -344925000.0 | |
| Repurchase Of Capital Stock | -63189000.0 | -87540000.0 | 0.0 | -75474000.0 | -103404000.0 |
| Sale Of Investment | 0.0 | 0.0 | 4452000.0 | 12440000.0 | 13409000.0 |
| Short Term Debt Issuance | 70348000.0 | 100000000.0 | 123995000.0 | 344925000.0 | |
| Short Term Debt Payments | -70348000.0 | -100000000.0 | -123995000.0 | -344925000.0 | |
| Stock Based Compensation | 27314000.0 | 29864000.0 | 29190000.0 | 29684000.0 | 29914000.0 |
