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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

X

- Definition

For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

+ References

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-Number 210
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Carrying amount as of the balance sheet date of obligations due all related parties.

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+ References

No definition available.

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