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Long-Term Debt and Short-Term Borrowings, Variable Rate Long-Term Debt (Details) - Variable Rate Pennsylvania Economic Development Financing Authority Exempt Facilities Revenue Refunding Bonds, Series 2008A, due 2029 [Member] - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022
Variable Rate Long-Term Debt [Abstract] |  |
Face value | $ 12,000 |
Maturity date | Oct. 01, 2029 |
Annual average variable interest rate | 3.38% | 1.25%
Variable interest rate at year end | 3.89% | 3.75%
Period in which to reimburse bank for purchase price of tendered bonds that have not been remarketed | 14 months |

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