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Note 7 - Debt (Details) (USD $) | 1 Months Ended | 12 Months Ended |  |  |  |  |  | 12 Months Ended |  |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 29, 2013 | Dec. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2008 | Dec. 31, 2013 Transport Enterprise Leasing, LLC [Member] | May 31, 2011 Transport Enterprise Leasing, LLC [Member] | Jan. 29, 2013 Transport Enterprise Leasing, LLC [Member] Maximum [Member] Eighth Amendment [Member] | Dec. 31, 2013 Federal Funds Rate [Member] Base Rate Loans [Member] | Dec. 31, 2013 London Interbank Offered Rate (LIBOR) [Member] Base Rate Loans [Member] | Jan. 29, 2013 Eighth Amendment [Member] | Dec. 31, 2013 Base Rate Loans [Member] | Dec. 31, 2013 LIBOR [Member] | Sep. 30, 2008 Letter of Credit [Member] | Sep. 30, 2008 Swing Line Sub Facility [Member] | Jan. 29, 2013 When Availability Is Less Than $50 Million [Member] | Jan. 29, 2013 When Availability Is At Least $50 Million [Member] | Jan. 29, 2013 Testing of Fixed Charge Coverage Ratio Covenant [Member] | Jan. 29, 2013 Cash Dominion Applies [Member] | Dec. 31, 2012 Cash Dominion Applies [Member] | Dec. 31, 2013 Maximum [Member] | Dec. 31, 2013 Minimum [Member]
Note 7 - Debt (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars) |  |  |  | $ 85,000,000 |  |  |  |  |  | $ 95,000,000 |  |  | $ 85,000,000 | $ 10,000,000 |  |  |  |  |  |  |
Line Of Credit Facility, Maximum Increase In Borrowing Capacity (in Dollars) |  |  |  | 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percent of Aggregate Commitments Under Credit Facility |  |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Availability Block Removed (in Dollars) | 15,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.375% | 0.50% | 12.50% |  |  | 2.25% | 1.50%
Line Of Credit Facility, Revolver Commitment Amount (in Dollars) |  | 25,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11,900,000 | 14,300,000 | 75,000,000 |  |
Line Of Credit Facility, Availability As Percentage Of Revolver Commitment |  | 35.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15.00% |  |  |
Maximum Stock Repurchase Aggregate Amount Allowed Pursuant To Credit Facility Agreement (in Dollars) | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  | 49.00% | 49.00% | 51.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Fee Amount (in Dollars) |  | 300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  | 0.50% | 1.00% |  |  |  |  |  |  |  |  |  |  |  |
Percent Of Eligible Accounts Receivable |  | 85.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percent of Appraised Net Orderly Liquidation Value of Eligible Revenue Equipment |  | 85.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percent of Net Book Value of Eligible Revenue Equipment |  | 95.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percent Of Appraised Fair Market Value Of Eligible Real Estate |  | 65.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Amount Outstanding (in Dollars) |  | 7,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Letters of Credit Outstanding, Amount (in Dollars) |  | 39,000,000 | 39,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Remaining Borrowing Capacity (in Dollars) |  | 44,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Interest Rate at Period End |  |  |  |  |  |  |  |  |  |  | 5.00% | 2.30% |  |  |  |  |  |  |  |  |
Debt, Secured with a Cross Default Feature (in Dollars) |  | $ 192,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition Debt, Secured with a Cross Default Feature + References No definition available. + Details
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X
- Definition The availability of line of credit facility as percentage of the revolver commitment. + References No definition available. + Details
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- Definition The line of credit facility's availability block which was eliminated when the 8th amendment was entered. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line of credit facility's maximum increase in borrowing capacity as long as no event of default exists. + References No definition available. + Details
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- Definition The revolver commitment amount + References No definition available. + Details
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X
- Definition The maximum stock repurchase aggregate amount allowed pursuant to the credit facility agreement. + References No definition available. + Details
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- Details
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- Definition The percent of the lenders' aggregate commitments under the credit facility. + References No definition available. + Details
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- Definition Percent of appraised fair market value of eligible real estate used in the calculation of borrowing base. + References No definition available. + Details
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- Definition The percent of appraised net orderly liquidation value of eligible revenue equipment used in the calculation of borrowing base. + References No definition available. + Details
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- Definition Percent of the eligible accounts receivable used in the calculation of borrowing base. + References No definition available. + Details
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- Definition Percent of net book value of eligible revenue equipment used in the calculation of borrowing base. + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Amount of the fee that accompanies borrowing money under the debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition The effective interest rate at the end of the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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