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Financial Instruments and Risk Management - IPO (Details) kr / shares in Units, $ / shares in Units, $ in Thousands |  | 1 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 05, 2021 USD ($) $ / shares shares | Oct. 31, 2020 USD ($) $ / shares shares | Sep. 30, 2020 USD ($) $ / shares shares | Dec. 31, 2018 USD ($) $ / shares shares | Feb. 05, 2021 DKK (kr) kr / shares shares | Dec. 31, 2020 kr / shares | Dec. 31, 2020 USD ($) shares | Aug. 10, 2020 kr / shares | Dec. 31, 2019 kr / shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2017 USD ($) shares
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |  |  |  |
Share price | $ / shares |  |  |  | $ 207 |  |  |  |  |  |  |
Issued shares (in DKK) | $ |  |  |  |  |  |  | $ 2,648 |  |  | $ 2,481 |
Outstanding shares (in DKK) | $ |  |  |  | $ (931) |  |  | $ 7,038 |  |  | $ 9,362 | $ 2,550
ADS | Initial Public Offering |  |  |  |  |  |  |  |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |  |  |  |
Number of shares issued | 3,000,000 |  |  |  |  |  |  |  |  |  |
Share price | $ / shares | $ 10.00 |  |  |  |  |  |  |  |  |  |
Net proceeds | $ | $ 25,400 |  |  |  |  |  |  |  |  |  |
Ordinary shares |  |  |  |  |  |  |  |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |  |  |  |
Number of shares issued |  | 269,136 | 745,380 |  |  |  |  |  |  |  |
Share price | $ / shares |  | $ 8.89 | $ 8.89 |  |  |  |  |  |  |  |
Net proceeds | $ |  | $ 2,400 | $ 6,600 |  |  |  |  |  |  |  |
Number of shares issued (in shares) |  |  |  | 12,917,016 |  |  | 16,198,668 |  |  | 15,184,152 | 12,917,016
Nominal value per share | kr / shares |  |  |  |  |  | kr 1 |  | kr 1 | kr 1 |  |
Ordinary shares | Initial Public Offering |  |  |  |  |  |  |  |  |  |  |
Disclosure of non-adjusting events after reporting period [line items] |  |  |  |  |  |  |  |  |  |  |
Registered shares (in DKK) | kr |  |  |  |  | kr 19,198,668 |  |  |  |  |  |
Issued shares (in DKK) | kr |  |  |  |  | 19,198,668 |  |  |  |  |  |
Outstanding shares (in DKK) | kr |  |  |  |  | kr 19,198,668 |  |  |  |  |  |
Shares registered (in shares) |  |  |  |  | 19,198,668 |  |  |  |  |  |
Number of shares issued (in shares) |  |  |  |  | 19,198,668 |  |  |  |  |  |
Shares outstanding (in shares) |  |  |  |  | 19,198,668 |  |  |  |  |  |
Nominal value per share | kr / shares |  |  |  |  | kr 1 |  |  |  |  |  |

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