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Note 4 - Details of Consolidated Balance Sheet Accounts (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block] |
(In thousands) |  | 201 8 |  |  | 2017 |
Tires in service |  | $ | 5,011 |  |  | $ | 4,787 |
License fees |  |  | 4,760 |  |  |  | 4,858 |
Parts and tires inventory |  |  | 3,528 |  |  |  | 4,322 |
Insurance premiums |  |  | 1,831 |  |  |  | 3,057 |
Contract assets |  |  | 1,823 |  |  |  | — |
Other |  |  | 2,971 |  |  |  | 2,786 |
|  | $ | 19,924 |  |  | $ | 19,810 |
Schedule of Accrued Liabilities [Table Text Block] |
(In thousands) |  | 201 8 |  |  | 2017 |
Salaries and wages |  | $ | 9,744 |  |  | $ | 4,171 |
Accrued expenses |  |  | 7,091 |  |  |  | 8,212 |
Vacation |  |  | 5,895 |  |  |  | 5,621 |
Accrued liability to MWL |  |  | 1,222 |  |  |  | 1,765 |
Other |  |  | 4,214 |  |  |  | 1,853 |
|  | $ | 28,166 |  |  | $ | 21,622 |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -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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