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

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