CONDENSED CONSOLIDATED STATEMENTS OF CAPITAL STOCK AND LONG-TERM DEBT (Unaudited) (Parentheticals) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2023	Dec. 31, 2022
Common stock, shares authorized	40,000	40,000
Shares Outstanding	17,771	17,642
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 2025-2044
Long term debt maturity period	2025-2038
State Revolving Trust Notes due 2025-2044 \| Minimum
Interest rate	2.00%
State Revolving Trust Notes due 2025-2044 \| Maximum
Interest rate	4.03%

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Disclosure of timing of required repayments, sinking fund requirements, and other redeemable securities at fixed or determinable prices and dates in the five years immediately following the date of the latest balance sheet presented in the financial statements, and the amount thereafter to fully repay the principal of long-term debt. These disclosures may be made either on an individual debt or security basis, by type of debt or security basis, or on a combined basis.

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Value of the difference between preference in liquidation and the par or stated values of the preferred shares.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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Number of previously issued common shares repurchased by the issuing entity and held in treasury.

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