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Note 19 - Related Party Transactions (Details Textual) - Majority Shareholder [Member] - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Revenue from Related Parties | $ 1,363,000 | $ 8,085,000 | $ 9,897,000
Related Party Transaction, Expenses from Transactions with Related Party | 21,438,000 | 11,103,000 | 6,791,000
Due from Related Parties, Total | 723,000 | 636,000 |
Due to Related Parties, Total | 1,290,000 | 1,276,000 |
Freight Transportation [Member] |  |  |
Accounts Receivable, Related Parties | 382,000 | 448,000 |
Maintenance Performed and Charges Paid to Third Parties on Behalf of Their Affiliate and Charged Back [Member] |  |  |
Accounts Receivable, Related Parties | 341,000 | 188,000 |
Auto Liability Coverage [Member] |  |  |
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party | 11,437,000 | 9,851,000 | 8,516,000
Workers Compensation Coverage [Member] |  |  |
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party | $ 338,000 | $ 300,000 | $ 299,000

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