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Note 18 - Related Party Transactions (Details Textual) - Majority Shareholder [Member] - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Tractors [Member] |  |  |
Proceeds from Sale of Productive Assets |  | $ 750,000 |
Physical Damage Coverage [Member] |  |  |
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party | $ 2,467,000 | 2,597,000 | $ 2,036,000
Auto Liability Coverage [Member] |  |  |
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party | 9,605,000 | 9,464,000 | 9,461,000
General Liability Coverage [Member] |  |  |
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party | 23,000 | 22,000 | 22,000
Workers Compensation Coverage [Member] |  |  |
Related Party Transaction, Selling, General and Administrative Expenses from Transactions with Related Party | 276,000 | 267,000 | 254,000
Freight Transportation [Member] |  |  |
Accounts Receivable, Related Parties | 2,370,000 |  |
Maintenance Performed and Charges Paid to Third Parties on Behalf of Their Affiliate and Charged Back [Member] |  |  |
Accounts Receivable, Related Parties | 5,000 |  |
Property Lease Charges [Member] |  |  |
Accounts Receivable, Related Parties | 106,000 |  |
Insurance Premiums Paid in Excess of Amounts Earned [Member] |  |  |
Accounts Receivable, Related Parties | 481,000 | 1,624,000 |
Revenue from Related Parties | 11,325,000 | 13,253,000 | 10,350,000
Related Party Transaction, Expenses from Transactions with Related Party | 4,834,000 | 1,440,000 | $ 1,303,000
Due from Related Parties | 2,482,000 | 2,598,000 |
Due to Related Parties | $ 1,236,000 | $ 971,000 |

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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=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Related Parties -URI http://asc.fasb.org/extlink&oid=16382449 Reference 3: 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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