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Investments - Investments in Equity Securities Narrative (Details) $ / shares in Units, $ in Thousands, € in Millions |  | 3 Months Ended | 12 Months Ended |  |  |  |  |
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Dec. 14, 2021 USD ($) | Dec. 31, 2022 USD ($) $ / shares | Sep. 30, 2022 USD ($) | Mar. 31, 2022 USD ($) | Jun. 30, 2021 USD ($) | Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2022 EUR (€) | May 04, 2022 EUR (€) | Mar. 31, 2022 EUR (€) | Sep. 07, 2021 | Mar. 31, 2021 USD ($)
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in equity securities |  | $ 96,500 |  |  |  | $ 96,500 | $ 77,800 | $ 73,600 |  |  |  |  |
(Decrease) increase in fair value of investments in equity securities |  |  |  |  |  | 13,100 | 3,200 |  |  |  |  |  |
Payments to acquire investments |  |  |  |  |  | 9,900 | 103,900 | 50,800 |  |  |  |  |
Realized gain on investment in equity securities | $ 2,600 |  |  |  |  | 0 | 2,600 | 0 |  |  |  |  |
Reclassification from investments in equity securities to equity method investments |  |  |  |  |  |  | 36,800 |  |  |  |  |  |
Payments to acquire equity securities |  |  |  |  |  | 9,400 | 45,200 |  |  |  |  |  |
McPhy |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in equity securities |  | 17,200 |  |  |  | 17,200 | 31,300 |  |  |  |  |  |
(Decrease) increase in fair value of investments in equity securities |  |  |  |  |  | (11,800) | (19,700) | 17,000 |  |  |  |  |
Stabilis Energy, Inc. |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in equity securities |  | 7,800 |  |  |  | 7,800 | 6,200 |  |  |  |  |  |
(Decrease) increase in fair value of investments in equity securities |  |  |  |  |  | 1,600 | 2,200 | $ (2,900) |  |  |  |  |
Transform Materials |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in equity securities |  | 25,100 |  |  |  | 25,100 | 25,100 |  |  |  |  |  | $ 25,100
Shares owned (shares) |  |  |  |  |  |  |  |  |  |  |  |  | 5.00%
Svante Inc. |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in equity securities |  | 38,500 |  |  |  | 38,500 | 15,100 |  |  |  |  |  | $ 15,100
Shares owned (shares) |  |  |  | 10.00% |  |  |  |  |  |  | 10.00% |  |
Earthly Labs Inc. |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |  |  |  |  |  |
Shares owned (shares) |  |  |  |  | 15.00% |  |  |  |  |  |  |  |
Payments to acquire investments |  |  |  |  | $ 5,000 |  |  |  |  |  |  |  |
Equity investments, ownership interest | 85.00% |  |  |  |  |  |  |  |  |  |  |  |
HTEC |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |  |  |  |  |  |
(Decrease) increase in fair value of investments in equity securities |  |  |  |  |  |  | $ 20,700 |  |  |  |  |  |
Equity investments, ownership interest |  |  |  |  |  |  |  | 15.60% |  |  |  | 25.00% |
HTEC | Nonconsolidated Investee or Group of Investees |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification from investments in equity securities to equity method investments |  |  |  |  |  | 20,700 |  |  |  |  |  |  |
Hy24 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in equity securities |  | 900 |  | $ 2,400 |  | 900 |  |  | € 0.9 | € 0.9 | € 2.2 |  |
Cemvita Factory Inc., Gold Hydrogen LLC |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in equity securities |  | 2,000 |  |  |  | 2,000 |  |  |  |  |  |  |
Payments to acquire equity securities |  |  | $ 1,000 | $ 1,000 |  |  |  |  |  |  |  |  |
Avina |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in equity securities |  | 5,000 |  |  |  | $ 5,000 |  |  |  |  |  |  |
Payments to acquire equity securities |  | $ 5,000 |  |  |  |  |  |  |  |  |  |  |
Avina | Series A Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |
Debt and Equity Securities, FV-NI |  |  |  |  |  |  |  |  |  |  |  |  |
Additional number of shares (in shares) | shares |  |  |  |  |  | 294,627 |  |  |  |  |  |  |
Shares price per share (usd per share) | $ / shares |  | $ 16.97 |  |  |  | $ 16.97 |  |  |  |  |  |  |

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