Income Taxes (Narrative) (Details) - USD ($) $ in Thousands |
9 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Sep. 30, 2025 |
|
| Income Taxes [Line Items] | ||
| Gross unrecognized tax benefits | $ 27,146 | $ 17,271 |
| Unrecognized tax benefits that, if recognized, would affect the effective tax rate | 16,420 | |
| Possible decrease in unrecognized tax benefits liability | $ 1,646 | |
| Domestic Tax Authority [Member] | ||
| Income Taxes [Line Items] | ||
| Year remaining open to tax examination | 2022 | |
| State and Local Jurisdiction [Member] | ||
| Income Taxes [Line Items] | ||
| Year remaining open to tax examination | 2020 | |
| Foreign Jurisdiction [Member] | ||
| Income Taxes [Line Items] | ||
| Year remaining open to tax examination | 2018 |