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Note 2 - Details of Consolidated Balance Sheet Accounts (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] |
(In thousands) |  | 20 16 |  |  | 2015 |
Tires in service |  | $ | 5,351 |  |  | $ | 5,064 |
License fees |  |  | 5,042 |  |  |  | 4,921 |
Parts and tires inventory |  |  | 4,350 |  |  |  | 4,011 |
Insurance premiums |  |  | 1,658 |  |  |  | 1,730 |
Other |  |  | 2,906 |  |  |  | 2,408 |
|  | $ | 19,307 |  |  | $ | 18,134 |
Schedule of Accrued Liabilities [Table Text Block] |
(In thousands) |  | 201 6 |  |  | 2015 |
Accrued expenses |  | $ | 12,903 |  |  | $ | 7,940 |
Vacation |  |  | 5,353 |  |  |  | 4,782 |
Accrued liability to MWL |  |  | 3,026 |  |  |  | 4,284 |
Salaries and wages |  |  | 1,839 |  |  |  | 2,644 |
Other |  |  | 3,718 |  |  |  | 1,984 |
|  | $ | 26,839 |  |  | $ | 21,634 |

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- Definition Tabular disclosure of the amounts paid in advance for capitalized costs that will be expensed with the passage of time or the occurrence of a triggering event, and will be charged against earnings within one year or the normal operating cycle, if longer; the aggregate carrying amount of current assets, not separately presented elsewhere in the balance sheet; and other deferred costs. + 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 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Tabular disclosure of the components of accrued liabilities. + References No definition available. + Details
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