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CONSOLIDATED STATEMENTS OF CAPITAL STOCK AND LONG-TERM DEBT (Parentheticals) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Shares Authorized	40,000	40,000
Shares Outstanding	17,887	17,821
Shares Authorized (in Dollars)	$ 120	$ 120
Shares Outstanding	16	20
First Mortgage Bonds due 2026-2059
Long term debt maturity period	2026-2059
Amortizing Secured Notes due 2028-2046
Long term debt maturity period	2028-2046
State Revolving Trust Notes due 2025-2047
Long term debt maturity period	2025-2047
Minimum | First Mortgage Bonds due 2026-2059
Interest rate	0.00%
Minimum | Amortizing Secured Notes due 2028-2046
Interest rate	3.94%
Minimum | State Revolving Trust Notes due 2025-2047
Interest rate	0.00%
Maximum | First Mortgage Bonds due 2026-2059
Interest rate	5.50%
Maximum | Amortizing Secured Notes due 2028-2046
Interest rate	7.05%
Maximum | State Revolving Trust Notes due 2025-2047
Interest rate	4.03%
Convertible Preferred Stock $7.00 Series
Shares Outstanding	5	10
Nonredeemable Preferred Stock $7.00 Series
Shares Outstanding	1	1
Nonredeemable Preferred Stock $4.75 Series
Shares Outstanding	10	10

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

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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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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