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v3.20.4

Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2020
Summary of Significant Accounting Policies |
Schedule of cash as reported in the consolidated statements of cash flows | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
​ |  | 2020 |  | 2019 | ​ | 2018
Cash and cash equivalents | ​ | $ | 117,358 | ​ | $ | 33,006 | ​ | $ | 82,233
Restricted cash - current | ​ |  | 10 | ​ |  | 10 | ​ |  | 10
Restricted cash - noncurrent | ​ |  | 450 | ​ |  | 450 | ​ |  | 450
Total cash, cash equivalent and restricted cash in consolidated statements of cash flows | ​ | $ | 117,818 | ​ | $ | 33,466 | ​ | $ | 82,693

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- Definition Tabular disclosure of the components of cash and cash equivalents. + References No definition available. + Details
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