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v3.20.4

Convertible Notes (Tables) | 12 Months Ended
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Dec. 31, 2020
Convertible Notes |
Schedule of carrying amount and fair value of convertible notes | The carrying amount and fair value of our convertible notes were as follows (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​
​ | ​ | 2020 | ​ | 2019 | ​
​ |  | Carrying |  | ​ | ​ |  | Carrying |  | ​ | ​ |
​ | ​ | Amount | ​ | Fair Value | ​ | Amount | ​ | Fair Value | ​
1.25% Convertible Senior Notes due 2020 | ​ | $ | — | ​ | $ | — | ​ | $ | 18,300 | ​ | $ | 32,511 | ​

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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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