CONSOLIDATED STATEMENTS OF CAPITAL STOCK AND LONG-TERM DEBT (Parentheticals) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Common stock, shares authorized	40,000	40,000
Common stock, shares outstanding	17,642	17,522
Preferred stock, shares authorized (in Dollars)	$ 120	$ 120
Preferred stock, shares outstanding	20	20
Convertible Preferred Stock $7.00 Series
Preferred stock, shares outstanding	10	10
Nonredeemable Preferred Stock $7.00 Series
Preferred stock, shares outstanding	1	1
Nonredeemable Preferred Stock $4.75 Series
Preferred stock, shares outstanding	10	10
First Mortgage Bonds due 2023-2059
Long term debt maturity period	2023-2059
First Mortgage Bonds due 2023-2059 | Minimum
Interest rate	0.00%
First Mortgage Bonds due 2023-2059 | Maximum
Interest rate	5.50%
Amortizing Secured Notes due 2028-2046
Long term debt maturity period	2028-2046
Amortizing Secured Notes due 2028-2046 | Minimum
Interest rate	3.94%
Amortizing Secured Notes due 2028-2046 | Maximum
Interest rate	7.05%
State Revolving Trust Notes due 2025-2038
Long term debt maturity period	2025-2038
State Revolving Trust Notes due 2025-2038 | Minimum
Interest rate	2.00%
State Revolving Trust Notes due 2025-2038 | Maximum
Interest rate	4.22%
Construction Loans
Interest rate	0.00%