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Note 8 - Leases (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Scheduleof Future Minimum Lease Paymentsfor Operatingand Capital Leases [Table Text Block] |
|  | Operating |  |  | Capital |
2018 |  | $ | 73 |  |  | $ | 3,606 |
2019 |  |  | 73 |  |  |  | 3,606 |
2020 |  |  | 73 |  |  |  | 5,813 |
2021 |  |  | - |  |  |  | 5,368 |
202 2 |  |  | - |  |  |  | 5,175 |
Thereafter |  |  | - |  |  |  | 3,383 |
Total minimum lease payments |  | $ | 219 |  |  | $ | 26,951 |
Less: amount representing interest |  |  |  |  |  |  | (2,212 | )
Present value of minimum lease payments |  |  |  |  |  |  | 24,739 |
Less: current portion |  |  |  |  |  |  | (2,962 | )
Capital lease obligations, long-term |  |  |  |  |  | $ | 21,777 |
Schedule of Rent Expense [Table Text Block] |
(in thousands) |  | 2017 |  |  | 2016 |  |  | 2015 |
Revenue equipment rentals |  | $ | 12,055 |  |  | $ | 10,773 |  |  | $ | 12,611 |
Building and lot rentals |  |  | 448 |  |  |  | 708 |  |  |  | 2,078 |
Other equipment rentals |  |  | 261 |  |  |  | 254 |  |  |  | 340 |
|  | $ | 12,764 |  |  | $ | 11,735 |  |  | $ | 15,029 |

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