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v3.20.2

Accrued Liabilities (Tables) | 6 Months Ended
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Jun. 30, 2020
Accrued Liabilities |
Schedule of components of accrued liabilities | The following table sets forth the components of accrued liabilities, in thousands: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of
​ | ​ | June 30, | ​ | December 31,
​ |  | 2020 |  | 2019
Accrued liabilities: | ​ | ​ | ​ | ​ | ​ | ​
Salaries, wages, and commissions | ​ | $ | 33,463 | ​ | $ | 32,154
Insurance liabilities | ​ | ​ | 22,344 | ​ | ​ | 22,506
Deferred revenue | ​ | ​ | 15,719 | ​ | ​ | 16,139
Interest payable on long-term debt | ​ | ​ | 4,134 | ​ | ​ | 3,966
Income taxes payable | ​ | ​ | 19,360 | ​ | ​ | 50
Other | ​ | ​ | 25,669 | ​ | ​ | 23,603
Total accrued liabilities | ​ | $ | 120,689 | ​ | $ | 98,418

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