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Investments - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended | 36 Months Ended | 48 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2021 | Jul. 24, 2020
Related Party Transaction [Line Items] |  |  |  |  |  |
Short term investments average maturity period | 2 years 8 months 12 days | 3 years 4 months 24 days |  |  |  |
Purchase of investments in equity - long term | $ 3,577 | $ 3,212 | $ 3,890 | $ 13,300 | $ 16,900 |
Increase in fair value | 3,200 | 2,500 |  |  |  |
Carrying value of long-term investments in equity | 22,600 | 15,800 |  | 15,800 | 22,600 |
Commitment to acquire future long-term investments | 17,400 |  |  |  | 17,400 |
Equity method investments (Note 3c) | $ 2,373 | 4,534 |  | $ 4,534 | $ 2,373 | $ 4,900
Ownership percentage | 49.00% |  |  |  | 49.00% |
Majority investor, ownership percentage | 51.00% |  |  |  | 51.00% |
Period majority voting share capital can be sold to the company | 18 months |  |  |  |  |
Loss on equity method investments | $ 2,161 | $ 366 | $ 0 |  |  |
Oncacare |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |
Loan granted tp related party | $ 10,000 |  |  |  |  |
Related party, loan interest rate | 1.60% |  |  |  |  |

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