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BASIS OF PRESENTATION (Tables) | 6 Months Ended
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Jun. 30, 2021
BASIS OF PRESENTATION |
Schedule of Cash, Cash Equivalents and Restricted Cash | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | As of June 30,
(thousands of dollars) |  | 2021 |  | 2020
Cash and cash equivalents | ​ | $ | 119,138 | ​ | $ | 2,330
Restricted cash - pledged deposits for performance bonds | ​ |  | — | ​ |  | 3,807
Cash, cash equivalents and restricted cash shown in the statement of cash flows | ​ | $ | 119,138 | ​ | $ | 6,137

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