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Note 18 - Related Party Transactions (Details Textual) - Majority Shareholder [Member] - USD ($) | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Revenue from Related Parties | $ 585,000 | $ 4,834,000 | $ 11,325,000
Related Party Transaction, Expenses from Transactions with Related Party | 7,497,000 | 8,837,000 | 4,834,000
Due from Related Parties | 21,000 | 929,000 |
Due to Related Parties | 971,000 | 1,297,000 |
Freight Transportation [Member] |  |  |
Accounts Receivable, Related Parties | 19,000 | 925,000 |
Maintenance Performed and Charges Paid to Third Parties on Behalf of Their Affiliate and Charged Back [Member] |  |  |
Accounts Receivable, Related Parties | 2,000 | 4,000 |
Insurance Premiums Paid in Excess of Amounts Earned [Member] |  |  |
Accounts Receivable, Related Parties | 1,385,000 | 472,000 |
Physical Damage Coverage [Member] |  |  |
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party | 1,808,000 | 2,091,000 | 2,467,000
Auto Liability Coverage [Member] |  |  |
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party | 10,860,000 | 11,030,000 | 9,605,000
General Liability Coverage [Member] |  |  |
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party | 35,000 | 21,000 | 23,000
Workers Compensation Coverage [Member] |  |  |
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party | $ 286,000 | $ 298,000 | 276,000
Trucks [Member] |  |  |
Proceeds from Sale of Productive Assets |  |  | $ 67,500

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- Definition Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07.1(c)) -URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999 + Details
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