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Statement Of Cash Flow Information (Tables) | 6 Months Ended
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Jun. 30, 2021
Supplemental Cash Flow Information [Abstract] |
Schedule of supplemental cash flow information | The following table provides supplemental cash flow information (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Six Months Ended
​ | ​ | June 30,
​ |  | 2021 |  | 2020
Interest paid, net of interest capitalized | ​ | $ | 10,601 | ​ | $ | 8,413
Income taxes paid | ​ |  | 4,588 | ​ |  | 4,937

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- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
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