Note 7 - Debt (Details) - Current and Long-term Debt (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Note 7 - Debt (Details) - Current and Long-term Debt [Line Items]
Borrowings under Credit Facility	$ 0	$ 0
Borrowings under Credit Facility	19,301	7,010
Notes payable, current	42,957	44,070
Notes payable, long-term	167,976	169,491
Principal portion of capital lease obligations, secured by related revenue equipment	9,608	8,732
Principal portion of capital lease obligations, secured by related revenue equipment	11,578	13,186
Total debt and capital lease obligations	52,565	52,802
Total debt and capital lease obligations	179,554	182,677
Revenue Equipment Installment Notes [Member]
Note 7 - Debt (Details) - Current and Long-term Debt [Line Items]
Notes payable, current	42,632	43,745
Notes payable, long-term	144,829	158,596
Real Estate Note [Member]
Note 7 - Debt (Details) - Current and Long-term Debt [Line Items]
Notes payable, current	217	217
Notes payable, long-term	3,679	3,693
Other Note Payable [Member]
Note 7 - Debt (Details) - Current and Long-term Debt [Line Items]
Notes payable, current	108	108
Notes payable, long-term	$ 167	$ 192

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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The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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- Definition

The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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