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Note 9 - Long-term Debt (Details Textual) - USD ($) $ in Thousands |  |  | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jan. 05, 2023 | May 19, 2022 | Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Mar. 31, 2023 | Jun. 30, 2021 | Dec. 31, 2023 | Jan. 29, 2024 | Jul. 11, 2023 | Jun. 13, 2019
Repayments of Long-Term Debt |  |  |  |  | $ (0) |  |  | $ 2,812 |  |  |  |  |
Interest Rate Swap Effective May 31, 2019 Through May 31, 2024 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Liability, Notional Amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 175,000
Derivative, Fixed Interest Rate |  |  |  |  | 2.424% |  |  |  |  |  |  |  |
Interest Rate Swap [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative Counter Party Risk Number of Financial Institutions |  |  |  |  | 1 |  |  |  |  |  |  |  |
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax |  |  |  |  | $ (291) |  |  | (291) |  |  |  |  |
Interest Expense, Debt |  |  |  |  | 119 |  |  | $ 119 |  |  |  |  |
Gains Losses on Derivatives Expected to Be Amortized from OCITO Earnings |  |  |  |  | 115 |  |  |  |  |  |  |  |
Derivative, Notional Amount |  | $ 125,000 |  |  |  |  |  |  |  |  |  |  |
Derivative, Nonmonetary Notional Amount, Flow Rate, Percentage |  | 2.718% |  |  |  |  |  |  |  |  |  |  |
Interest Rate Derivative Liabilities, at Fair Value |  |  |  |  | 4,718 | $ 4,033 |  |  |  | $ 4,033 |  |  |
Secured Debt [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt |  |  |  |  | 189,441 | 189,413 |  |  |  | 189,413 |  |  |
Prepaid Expenses and Other Current Assets [Member] | Interest Rate Swap [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Rate Derivative Liabilities, at Fair Value |  |  |  |  | 3,058 | 3,174 |  |  |  | 3,174 |  |  |
Other Noncurrent Assets [Member] | Interest Rate Swap [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Rate Derivative Liabilities, at Fair Value |  |  |  |  | 1,660 | 859 |  |  |  | 859 |  |  |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Issuance Costs, Net | $ 334 |  |  |  |  |  |  |  |  |  | $ 279 |  |
Line of Credit Facility Increase in Maximum Borrowing Capacity | 50,000 |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 150,000 |  |  |  | 150,000 |  |  |  |  |  |  |  |
Long-Term Debt |  |  |  |  | 55,000 | 47,000 |  |  |  | 47,000 |  |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  |  |  | $ 94,450 | $ 102,450 |  |  |  | 102,450 |  |  |
Revolving Credit Facility [Member] | New York Federal Reserve Bank NYFRB [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  | 0.50% |  |  |  |  |  |  |  |
Revolving Credit Facility [Member] | One Month Adjusted Term SOFR Rate [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  | 0.10% |  |  |  |  |  |  |  |
Revolving Credit Facility [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  |  |  | 0.15% |  |  |  |  |  |  |  |
Revolving Credit Facility [Member] | Minimum [Member] | Leverage Ratio Two [Member] | Secured Overnight Financing Rate (SOFR) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  | 0.375% |  |  |  |  |  |  |  |
Revolving Credit Facility [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  |  |  | 0.30% |  |  |  |  |  |  |  |
Revolving Credit Facility [Member] | Maximum [Member] | Leverage Ratio Two [Member] | Secured Overnight Financing Rate (SOFR) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  | 1.00% |  |  |  |  |  |  |  |
Letter of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  | $ 10,000 |  |  |  |  |  |  |  |
Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument Covenant Leverage Ratio | 3.50% |  | 3.50% | 4.00% | 4.00% | 4.25% | 3.50% |  |  |  |  |  |
Repayments of Long-Term Debt |  |  |  |  |  |  |  |  |  | 10,000 |  |  |
Debt Instrument, Covenant Consolidated Interest Coverage Ratio |  |  |  |  |  |  |  |  | 3.00% |  |  |  |
Credit Agreement [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility Increase in Maximum Borrowing Capacity |  |  |  |  | $ 175,000 |  |  |  |  |  |  |  |
Credit Agreement [Member] | Asset Pledged as Collateral [Member] | Cash Surrender Value of Corporate Owned Life Insurance Policies [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  | $ 1,000 |
Credit Agreement [Member] | Asset Pledged as Collateral [Member] | Corporate Owned Life Insurance Policies [Member] | Other Noncurrent Liabilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Secured Debt |  |  |  |  | 546 | $ 750 |  |  |  | $ 750 |  |  |
Senior Secured Term Loan Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  | $ 225,000 |  |  |  |  |  |  |  |
Senior Secured Term Loan Facility [Member] | Secured Overnight Financing Rate (SOFR) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  | 0.10% |  |  |  |  |  |  |  |
Senior Secured Term Loan Facility [Member] | Minimum [Member] | Leverage Ratio One [Member] | Secured Overnight Financing Rate (SOFR) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  | 1.375% |  |  |  |  |  |  |  |
Senior Secured Term Loan Facility [Member] | Maximum [Member] | Leverage Ratio One [Member] | Secured Overnight Financing Rate (SOFR) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  | 2.00% |  |  |  |  |  |  |  |
Swingline Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  | $ 15,000 |  |  |  |  |  |  |  |

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