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v3.20.1

Accounts Payable and Accrued Liabilities (Tables) | 3 Months Ended
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Mar. 31, 2020
Accounts Payable and Accrued Liabilities |
Summary of accrued liabilities | The following is a summary of accrued liabilities (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
​ |  | 2020 |  | 2019
Payroll and related employee benefits | ​ | $ | 74,008 | ​ | $ | 64,705
Current operating lease liability | ​ | ​ | 79,532 | ​ | ​ | 74,036
Casualty insurance reserves | ​ |  | 9,902 | ​ |  | 9,918
Corporate income taxes and other taxes | ​ |  | 6,822 | ​ |  | 9,027
Other | ​ |  | 22,384 | ​ |  | 25,815
​ | ​ | $ | 192,648 | ​ | $ | 183,501

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