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Note 13 - Long-term Debt (Details Textual) | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2023 USD ($) | Sep. 22, 2023 USD ($) | Sep. 21, 2023 USD ($) | Dec. 31, 2022 USD ($) | Jun. 30, 2022 USD ($) | Dec. 31, 2021 | Dec. 06, 2021 USD ($) | Aug. 12, 2019 USD ($)
Long-Term Debt | $ 27,337,766 |  |  |  |  |  |  |
Long-Term Debt, Current Maturities | 814,667 |  |  | $ 1,545,090 |  |  |  |
Long-Term Debt, Maturity, Year One | 814,667 |  |  |  |  |  |  |
Long-Term Debt, Maturity, Year Two | 851,444 |  |  |  |  |  |  |
Long-Term Debt, Maturity, Year Three | 886,624 |  |  |  |  |  |  |
Long-Term Debt, Maturity, Year Four | 923,257 |  |  |  |  |  |  |
Long-Term Debt, Maturity, Year Five | 23,861,774 |  |  |  |  |  |  |
First National Bank of Omaha [Member] |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | 10,000,000 | $ 10,000,000 | $ 5,000,000 |  |  |  |  | $ 40,000,000
Credit Agreement, Maximum Dividend Amount |  |  |  |  | $ 8,125,000 |  |  |
Long-term Line of Credit, Total | $ 0 |  |  |  |  |  |  |
Minimum Consolidated Leverage Ratio Requirement | 3 |  |  | 3.25 |  | 3.5 |  |
Consolidated Fixed Charge Ratio Requirement | 1.15 |  |  |  |  |  |  |
First National Bank of Omaha [Member] | Revolving Credit Facility [Member] | Prime Rate [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 0.65% |  |  |  |  |  |  |
First National Bank of Omaha [Member] | Revolving Credit Facility [Member] | Prime Rate [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 | 27,337,766 |  |  | $ 28,499,270 |  |  |  |
Long-Term Debt, Current Maturities | $ 814,667 |  |  | $ 1,545,090 |  |  |  |
First National Bank of Omaha [Member] | Term Loan 2 [Member] |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  | $ 5,500,000

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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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-4 + Details
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