Amount of amortization expense attributable to debt issuance costs.

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Face (par) amount of debt instrument at time of issuance.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount, after accumulated amortization, of debt issuance costs related to line of credit arrangements. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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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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Note 6 - Revolving Line of Credit and Long-term Debt (Details Textual) - Senior Secured Credit Facility [Member] - USD ($) $ in Millions		6 Months Ended	12 Months Ended
	Jun. 22, 2020	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020	Nov. 30, 2021
Debt Instrument, Face Amount	$ 65.0
Debt Issuance Costs, Net, Total	1.8
Debt Instrument, Interest Rate, Effective Percentage		4.20%	4.20%
Term Loan [Member]
Debt Instrument, Face Amount	$ 40.0
Debt Instrument, Term (Year)	5 years
Repayments of Long-term Debt, Total			$ 1.0	$ 1.0
Interest Paid, Including Capitalized Interest, Operating and Investing Activities, Total			$ 0.9
Amortization of Debt Issuance Costs		$ 0.6
Term Loan [Member] \| Base Rate [Member] \| Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate	1.25%
Term Loan [Member] \| Base Rate [Member] \| Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate	1.75%
Term Loan [Member] \| Eurodollar [Member] \| Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate	2.25%
Term Loan [Member] \| Eurodollar [Member] \| Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate	2.75%
Term Loan [Member] \| Fed Funds Effective Rate Overnight Index Swap Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Interest Paid, Including Capitalized Interest, Operating and Investing Activities, Total				$ 0.9
Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 25.0
Debt Instrument, Term (Year)	5 years
Unamortized Debt Issuance Expense					$ 0.5
Revolving Credit Facility [Member] \| Other Assets [Member]
Debt Issuance Costs, Line of Credit Arrangements, Net, Total	$ 0.7