Long-Term Debt and Loan Agreements - Schedule of Long Term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Long-term Debt	$ 88,800	$ 94,000
Less unamortized deferred financing fees	32	38
Long-term Debt, net of deferred financing costs	88,768	93,962
Less current portion long-term debt	25,984	0
Long-term Debt	62,784	93,962
Loan Agreement [Member]
Debt Instrument [Line Items]
Long-term Debt	50,800	56,000
5.25% Senior Unsecured Notes due January 15, 2024 [Member]
Debt Instrument [Line Items]
Long-term Debt	11,000	11,000
5.30% Senior Unsecured Notes due January 15, 2024 [Member]
Debt Instrument [Line Items]
Long-term Debt	15,000	15,000
5.45% Senior Unsecured Notes due January 15, 2026 [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 12,000	$ 12,000

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt classified as noncurrent. Excludes lease obligation.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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