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v3.20.1

Accrued Liabilities (Tables) | 3 Months Ended
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Mar. 31, 2020
Payables and Accruals [Abstract] |
Schedule of accrued liabilities | Accrued liabilities consisted of the following (in thousands of dollars):
| March 31, 2020 |  | December 31, 2019
Accrued compensation expenses | $ | 7,497 |  |  | $ | 10,100 |
Accrued other | 2,582 |  |  | 3,634 |
Total accrued liabilities | $ | 10,079 |  |  | $ | 13,734 |

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