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Debt (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2022 | Dec. 31, 2023 | Dec. 31, 2021
Debt [Abstract] |  |  |
Total long-term debt | $ 126,977 |  | $ 149,190
Less discount on issuance of long-term debt | (161) |  | (169)
Less unamortized debt issuance costs | (2,528) |  | (2,652)
Less current maturities | (7,500) |  | (7,500)
Long-term portion | 116,788 |  | 138,869
8.43% Senior Notes, Series D, due 2022 [Member] |  |  |
Debt [Abstract] |  |  |
Total long-term debt | $ 7,500 |  | 7,500
Interest rate | 8.43% |  |
Variable Rate Pennsylvania Economic Development Financing Authority Exempt Facilities Revenue Refunding Bonds, Series 2008A, due 2029 [Member] |  |  |
Debt [Abstract] |  |  |
Total long-term debt | $ 12,000 |  | 12,000
3.00% Pennsylvania Economic Development Financing Authority Exempt Facilities Revenue Refunding Bonds, Series A of 2019, due 2036 [Member] |  |  |
Debt [Abstract] |  |  |
Total long-term debt | $ 10,500 |  | 10,500
Interest rate | 3.00% |  |
3.10% Pennsylvania Economic Development Financing Authority Exempt Facilities Revenue Refunding Bonds, Series B of 2019, due 2038 [Member] |  |  |
Debt [Abstract] |  |  |
Total long-term debt | $ 14,870 |  | 14,870
Interest rate | 3.10% |  |
3.23% Senior Notes, due 2040 [Member] |  |  |
Debt [Abstract] |  |  |
Total long-term debt | $ 15,000 |  | 15,000
Interest rate | 3.23% |  |
4.00% - 4.50% York County Industrial Development Authority Exempt Facilities Revenue Bonds, Series 2015, due 2029 - 2045 [Member] |  |  |
Debt [Abstract] |  |  |
Total long-term debt | $ 10,000 |  | 10,000
4.00% - 4.50% York County Industrial Development Authority Exempt Facilities Revenue Bonds, Series 2015, due 2029 - 2045 [Member] | Minimum [Member] |  |  |
Debt [Abstract] |  |  |
Interest rate | 4.00% |  |
4.00% - 4.50% York County Industrial Development Authority Exempt Facilities Revenue Bonds, Series 2015, due 2029 - 2045 [Member] | Maximum [Member] |  |  |
Debt [Abstract] |  |  |
Interest rate | 4.50% |  |
4.54% Senior Notes, due 2049 [Member] |  |  |
Debt [Abstract] |  |  |
Total long-term debt | $ 20,000 |  | 20,000
Interest rate | 4.54% |  |
3.24% Senior Notes, due 2050 [Member] |  |  |
Debt [Abstract] |  |  |
Total long-term debt | $ 30,000 |  | 30,000
Interest rate | 3.24% |  |
Committed Line of Credit, due September 2024 [Member] |  |  |
Debt [Abstract] |  |  |
Total long-term debt | $ 7,107 |  | $ 29,320
Committed Line of Credit, due September 2024 [Member] | LIBOR [Member] |  |  |
Debt [Abstract] |  |  |
Basis adjustment | 1.05% |  |
Committed Line of Credit, due September 2024 [Member] | SOFR [Member] | Plan [Member] |  |  |
Debt [Abstract] |  |  |
Basis adjustment |  | 1.17% |

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