Note 7 - Debt (Details) - Current and Long-term Debt (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Note 7 - Debt (Details) - Current and Long-term Debt [Line Items]
Current debt	$ 41,796	$ 63,636
Long-term debt	139,227	95,214
Capital lease obligations, secured by related revenue equipment	5,950	2,091
Capital lease obligations, secured by related revenue equipment	10,165	14,003
Total debt and capital lease obligations	47,746	65,727
Total debt and capital lease obligations	149,392	109,217
Line of Credit [Member]
Note 7 - Debt (Details) - Current and Long-term Debt [Line Items]
Long-term debt	8,915	5
Revenue Equipment Installment Notes [Member]
Note 7 - Debt (Details) - Current and Long-term Debt [Line Items]
Current debt	39,587	61,200
Long-term debt	130,096	94,920
Real Estate Note [Member]
Note 7 - Debt (Details) - Current and Long-term Debt [Line Items]
Current debt	2,101	2,328
Other Note Payable [Member]
Note 7 - Debt (Details) - Current and Long-term Debt [Line Items]
Current debt	108	108
Long-term debt	$ 216	$ 289

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Amount of capital lease obligation due within one year or the normal operating cycle, if longer.

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid more than one year (or one operating cycle, if longer) after the balance sheet date.

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