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v3.23.2

Fair value of financial instruments and investments - Marketable Securities (Details) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jan. 31, 2020 USD ($) $ / shares | Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2023 USD ($) fund | Jun. 30, 2022 USD ($) | Dec. 31, 2022 USD ($)
Equity Investments |  |  |  |  |  |
Purchase of marketable securities - equity investments |  |  |  | $ 18,159 |  |
Net unrealized gain (loss) on equity investments |  |  |  | 4,364 | $ (11,356) |
Redemption of marketable securities- equity investments |  |  |  | 4,249 | 3,630 |
ClearPoint Convertible note |  |  |  |  |  |
Purchase of convertible note |  |  |  |  | 40,429 |
Unrealized gain (loss) on convertible note |  |  |  | (1,539) | 1,995 |
ClearPoint equity investment |  |  |  |  |  |
Equity Investments |  |  |  |  |  |
Net unrealized gain (loss) on equity investments |  | $ (1,100) | $ 3,400 | (1,100) | 2,400 |
Loss on sale of equity investments |  | 800 |  | 800 |  |
ClearPoint equity investment | Quoted prices in active markets for identical assets (Level 1) |  |  |  |  |  |
Equity Investments |  |  |  |  |  |
Fair value of equity investment |  | 6,500 |  | 6,500 |  | $ 11,000
ClearPoint convertible debt |  |  |  |  |  |
ClearPoint Convertible note |  |  |  |  |  |
Purchase of convertible note | $ 10,000 |  |  |  |  |
Conversion price - convertible note | $ / shares | $ 6.00 |  |  |  |  |
Term of convertible note | 5 years |  |  |  |  |
Unrealized gain (loss) on convertible note |  | (1,600) | 3,500 | (1,500) | 2,000 |
ClearPoint convertible debt | Recurring basis | Significant other observable inputs (Level 2) | Deposits and Other Assets, Noncurrent |  |  |  |  |  |
ClearPoint Convertible note |  |  |  |  |  |
ClearPoint convertible debt security |  | 13,700 |  | $ 13,700 |  | $ 15,200
Mutual Funds |  |  |  |  |  |
Equity Investments |  |  |  |  |  |
Number of mutual funds denominated in a foreign currency | fund |  |  |  | 1 |  |
Net unrealized gain (loss) on equity investments |  | 2,300 | (4,900) | $ 4,400 | (11,400) |
Redemption of marketable securities- equity investments |  | 2,200 | 1,200 | 4,200 | 3,600 |
Unrealized foreign currency gains (losses) on equity investments |  | $ 1,200 | $ (300) | $ 1,400 | $ 400 |

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