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Note 12 - Long-term Debt (Details Textual)		6 Months Ended
	Sep. 17, 2024 USD ($)	Jun. 24, 2024 USD ($)	Sep. 30, 2024 USD ($)	May 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 22, 2023 USD ($)	Sep. 21, 2023 USD ($)	Dec. 31, 2022	Jun. 30, 2022 USD ($)	Dec. 31, 2021	Dec. 06, 2021 USD ($)	Aug. 12, 2019 USD ($)
Long-Term Debt			$ 26,731,376
Long-Term Debt, Current Maturities			842,893		$ 814,667
First National Bank of Omaha [Member]
Line of Credit Facility, Maximum Borrowing Capacity		$ 15,000,000		$ 15,000,000		$ 10,000,000	$ 5,000,000					$ 40,000,000
Credit Agreement, Maximum Dividend Amount									$ 8,125,000
Long-Term Line of Credit			9,600,000
Minimum Consolidated Leverage Ratio Requirement	3.5				3			3.25		3.5
Consolidated Fixed Charge Ratio Requirement	1.15				1.15
First National Bank of Omaha [Member] | Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate		0.65%
First National Bank of Omaha [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate		1.15%
First National Bank of Omaha [Member] | Term Loan 1 [Member]
Debt Instrument, Face Amount											$ 30,000,000	18,000,000
Debt Instrument, Interest Rate, Stated Percentage											4.00%
Long-Term Debt, Gross		$ 30,000,000
Long-Term Debt			26,731,376
Long-Term Debt, Current Maturities			842,893
First National Bank of Omaha [Member] | Term Loan 2 [Member]
Debt Instrument, Face Amount												$ 5,500,000
First National Bank of Omaha [Member] | Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 20,000,000
Long-Term Line of Credit			$ 0
Number of Operating Subsidiaries	3
Debt Instrument, Term (Year)	5 years
Debt Instrument, Term, Principle Payments (Year)	10 years
Unused Portion of Debt, Fee, Percent	0.25%
First National Bank of Omaha [Member] | Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) [Member]
Debt Instrument, Basis Spread on Variable Rate	2.75%
First National Bank of Omaha [Member] | Credit Facility [Member] | Base Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	1.75%
First National Bank of Omaha [Member] | Credit Facility [Member] | Minimum [Member]
Debt Instrument, Incremental Drawdowns	$ 1,000,000

X

- Definition

The consolidated fixed charge ratio requirement.

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- Definition

The maximum dividend amount available under credit agreement.

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- Definition

Represents the incremental drawdowns related to the debt.

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- Definition

The period of time in which the principle payments are due for the term loan.

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The minimum consolidated leverage ratio requirement.

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- Definition

Represents the number of operating subsidiaries.

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X

- Definition

The unused debt fee percentage.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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- Definition

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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- Definition

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

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- Definition

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

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- Definition

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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X

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

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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- Definition

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

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

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