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Note 7 - Debt (Details Textual) - USD ($) | 9 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 | Dec. 31, 2017 | Jun. 30, 2018
Line of Credit Facility, Maximum Borrowing Capacity | $ 95,000,000 |  |
Line of Credit Facility, Maximum Increase in Borrowing Capacity | $ 50,000,000 |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.25% |  |
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% |  |
Line of Credit Facility, Availability as Percentage of Revolver Commitment | 35.00% |  |
Line of Credit Facility, Revolver Commitment, Amount | $ 25,000,000 |  |
Percent of Appraised Fair Market Value of Eligible Real Estate | 75.00% |  |
Letters of Credit Outstanding, Amount | $ 35,100,000 | $ 32,900,000 |
Line of Credit Facility, Remaining Borrowing Capacity | 59,900,000 |  |
Long-term Line of Credit, Total | $ 6.20 |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.80% |  |
Fixed Charge Coverage Requirement | $ 0 | $ 0 |
Debt, Secured with a Cross Default Feature | 133,000,000 |  |
Commodity Contract Asset, Current | $ 900,000 |  |
Federal Funds Rate [Member] | Base Rate Loans [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate | 0.50% |  |
London Interbank Offered Rate (LIBOR) [Member] | Base Rate Loans [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.00% |  |
Applicable Margin [Member] | Base Rate Loans [Member] | Minimum [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate | 0.50% |  |
Applicable Margin [Member] | Base Rate Loans [Member] | Maximum [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.00% |  |
Applicable Margin [Member] | LIBOR [Member] | Minimum [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.50% |  |
Applicable Margin [Member] | LIBOR [Member] | Maximum [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate | 2.00% |  |
Letter of Credit [Member] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 95,000,000 |  |
Swing Line Sub Facility [Member] |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | $ 10,000,000 |  |
Percent of Aggregate Commitments under Credit Facility | 10.00% |  |
Revolving Credit Facility [Member] | Base Rate Loans [Member] |  |  |
Long-term Line of Credit, Total | $ 6,200,000 |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.80% |  |
Revolving Credit Facility [Member] | LIBOR Loans [Member] |  |  |
Long-term Line of Credit, Total |  |  | $ 0

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- Definition Debt secured with a cross default feature. + References No definition available. + Details
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- Definition Represents the fixed charge coverage requirement. + References No definition available. + Details
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- Definition The availability of line of credit facility as percentage of the revolver commitment. + References No definition available. + Details
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- 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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- 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 Carrying amount as of the balance sheet date of the asset arising from commodity contracts such as futures contracts tied to the movement of a particular commodity, which are expected to be converted into cash or otherwise disposed of within a year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + 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://fasb.org/us-gaap/role/ref/legacyRef -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 + 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://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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