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Note 9 - Long-term Debt (Details Textual) |  |  |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 20, 2025 USD ($) | Dec. 17, 2024 USD ($) T | May 19, 2022 USD ($) | Jun. 30, 2025 USD ($) | Mar. 31, 2025 USD ($) | Jun. 30, 2024 USD ($) | Jun. 30, 2025 USD ($) | Jun. 30, 2024 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2021 USD ($) | Jul. 11, 2023 USD ($) | Jun. 13, 2019 USD ($)
Gain (Loss) on Extinguishment of Debt |  |  |  | $ 0 |  | $ 0 | $ (156,000) | $ 0 |  |  |  |
Debt Modification Expense |  |  |  | $ (0) |  | (0) | 176,000 | (0) |  |  |  |
Repayments of Long-Term Debt |  |  |  |  |  |  | $ 149,563,000 | (0) |  |  |  |
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] | Prime Rate [Member] |  |  |  |  |  |  |  |  |  |  |
Interest Rate Swap Effective May 31, 2019 Through May 31, 2024 [Member] |  |  |  |  |  |  |  |  |  |  |  |
Derivative Liability, Notional Amount |  |  |  |  |  |  |  |  |  |  |  | $ 175,000,000
Derivative, Fixed Interest Rate |  |  |  | 2.424% |  |  | 2.424% |  |  |  |  |
Interest Rate Swap [Member] |  |  |  |  |  |  |  |  |  |  |  |
Derivative Counter Party Risk Number of Financial Institutions |  |  |  |  |  |  | 1 |  |  |  |  |
Other Comprehensive Income (Loss), Derivative, Excluded Component, Increase (Decrease), after Adjustments, Tax |  |  |  | $ (0) |  | (194,000) | $ (0) | (485,000) |  |  |  |
Interest Expense, Debt |  |  |  | 0 |  | $ 79,000 | 0 | $ 198,000 |  |  |  |
Derivative, Notional Amount |  |  | $ 125,000,000 |  |  |  |  |  |  |  |  |
Derivative, Nonmonetary Notional Amount, Flow Rate, Percentage |  |  | 2.718% |  |  |  |  |  |  |  |  |
Interest Rate Derivative Liabilities, at Fair Value |  |  |  |  |  |  |  |  | $ 2,340,000 |  |  |
Steel Hedging Instrument [Member] |  |  |  |  |  |  |  |  |  |  |  |
Derivative, Nonmonetary Notional Amount, Mass (US Ton) | T |  | 3,000 |  |  |  |  |  |  |  |  |  |
Derivative, Fixed Payments |  | $ 819,000 |  |  |  |  |  |  |  |  |  |
Derivative Liability |  |  |  | 76,000 |  |  | 76,000 |  | 54,000 |  |  |
Secured Debt [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount |  |  |  | 400,000 |  |  | 400,000 |  | 162,000 |  |  |
Long-Term Debt |  |  |  | 147,725,000 |  |  | 147,725,000 |  | 147,526,000 |  |  |
Prepaid Expenses and Other Current Assets [Member] | Interest Rate Swap [Member] |  |  |  |  |  |  |  |  |  |  |  |
Interest Rate Derivative Liabilities, at Fair Value |  |  |  | 1,337,000 |  |  | 1,337,000 |  | 1,712,000 |  |  |
Other Noncurrent Assets [Member] | Interest Rate Swap [Member] |  |  |  |  |  |  |  |  |  |  |  |
Interest Rate Derivative Liabilities, at Fair Value |  |  |  |  |  |  |  |  | 628,000 |  |  |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | 125,000 |  |  | 125,000 |  |  |  |  |
Long-Term Debt |  |  |  | 42,000,000 |  |  | 42,000,000 |  | 0 |  |  |
Line of Credit Facility, Remaining Borrowing Capacity |  |  |  | 82,450,000 |  |  | $ 82,450,000 |  | 149,450,000 |  |  |
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 |  |  |  |  |  |  | 1.00% |  |  |  |  |
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% |  |  |  |  |
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% |  |  |  |  |
Letter of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | 10,000 |  |  | $ 10,000 |  |  |  |  |
Swingline Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | 15,000 |  |  | 15,000 |  |  |  |  |
Floor Plan Line of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 20,000,000 |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 0.50% |  |  |  |  |  |  |  |  |  |  |
Senior Secured Term Loan Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | 150,000 |  |  | $ 150,000 |  |  |  |  |
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% |  |  |  |  |
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% |  |  |  |  |
Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount |  |  |  |  |  |  |  |  |  | $ 312,000 |  |
Debt Issuance Costs, Net |  |  |  |  |  |  |  |  |  | 863,000 |  |
Debt Instrument, Upfront Fee |  |  |  |  |  |  |  |  |  | 260,000 |  |
Deferred Debt Issuance Cost, Writeoff |  |  |  |  |  |  |  |  |  | 131,000 |  |
Write off of Unamortized Debt Discount |  |  |  |  |  |  |  |  |  | $ 25,000 |  |
Gain (Loss) on Extinguishment of Debt |  |  |  |  |  |  | $ 156,000 |  |  |  |  |
Debt Modification Expense |  |  |  |  |  |  | 176,000 |  |  |  |  |
Repayments of Long-Term Debt |  |  |  |  |  |  |  |  | 42,000,000 |  |  |
Debt Instrument Covenant Leverage Ratio |  |  |  |  | 3.50% |  |  |  |  |  |  |
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] | Cash Surrender Value of Corporate Owned Life Insurance Policies [Member] | Other Noncurrent Liabilities [Member] |  |  |  |  |  |  |  |  |  |  |  |
Secured Debt |  |  |  |  | $ 427,000 |  |  |  | $ 546,000 |  |  |
Credit Agreement [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility Increase in Maximum Borrowing Capacity |  |  |  | $ 175,000 |  |  | $ 175,000 |  |  |  |  |

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