Derivative Instruments (Narrative) (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended |
|---|---|---|
Dec. 31, 2022 |
Sep. 30, 2022 |
|
| Carrying Amount | ||
| Derivative [Line Items] | ||
| Cash collateral received from or held by counterparty | $ 36,202 | $ 26,045 |
| Estimated amount in AOCI to be reclassed in the next 12 months as a reduction to expense | 50,035 | |
| Cash collateral received from or held by counterparty | $ 36,202 | $ 26,045 |
| Cash Flow Hedge | Designated as Hedging Instrument | Interest Rate Swap | ||
| Derivative [Line Items] | ||
| Swap weighted average terms | 3 years 6 months | 2 years 8 months 12 days |
| Swap weighted average interest rate | 2.25% | 1.88% |