v3.6.0.2

Accrued and Other Current Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2016
Payables and Accruals [Abstract] |
Schedule of Accrued Liabilities | Accrued and other current liabilities as of December 31 consisted of the following:
|  | 2016 |  |  | 2015 |
|  | (Thousands of dollars) |
Salaries & wages |  | $ | 5,949 |  |  | $ | 19,955 |
Incentive compensation |  |  | 1,576 |  |  |  | 2,819 |
Income taxes |  |  | 587 |  |  |  | 1,453 |
Interest |  |  | 8,057 |  |  |  | 7,925 |
Vacation payable |  |  | 5,700 |  |  |  | 5,801 |
Group medical |  |  | 1,892 |  |  |  | 1,944 |
Transportations tax |  |  | 427 |  |  |  | 892 |
Operating lease |  |  | 769 |  |  |  | 814 |
Workers compensation |  |  | 865 |  |  |  | 1,047 |
Other |  |  | 2,524 |  |  |  | 2,109 |
Total accrued liabilities |  | $ | 28,346 |  |  | $ | 44,759 |

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