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v3.23.3

Investments (Narrative) (Details) |  | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jul. 31, 2023 USD ($) | Sep. 30, 2023 USD ($) shares | Sep. 30, 2022 USD ($) investment shares | Sep. 30, 2023 USD ($) shares | Sep. 30, 2022 USD ($) investment shares | Dec. 31, 2022 USD ($) investment shares | May 19, 2023 | Apr. 12, 2022 USD ($)
Equity Securities [Line Items] |  |  |  |  |  |  |  |
Shares held | shares |  | 1,000,000 |  | 1,000,000 |  | 1,100,000 |  |
Equity securities |  | $ 26,000,000 |  | $ 26,000,000 |  | $ 58,400,000 |  |
Shares issued in debt-for-equity exchange (in shares) | shares |  |  | 500,000 |  | 2,800,000 |  |  |
Aggregate purchase price |  |  | $ 22,300,000 |  | $ 112,300,000 |  |  |
Number of shares sold in transaction (in shares) | shares |  | 0 |  | 52,393 |  |  |  |
Gross unrealized gains |  | $ 500,000 |  | $ 500,000 |  | $ 600,000 |  |
Investments in an unrealized loss position | investment |  |  | 0 |  | 0 | 0 |  |
Impairment losses |  |  |  | 0 |  | $ 0 |  |
Income (loss) from equity method investment, net |  | 90,000 | $ (3,191,000) | (9,665,000) | $ (10,077,000) |  |  |
Management fees recognized |  | 0 | $ 0 | 0 | 1,500,000 |  |  |
Equity method investments |  | 99,400,000 |  | 99,400,000 |  | $ 112,300,000 |  |
Xyla, Inc. |  |  |  |  |  |  |  |
Equity Securities [Line Items] |  |  |  |  |  |  |  |
Payments to acquire equity securities without readily determinable fair value | $ 25,000,000.0 |  |  |  |  |  |  |
Equity securities without readily determinable fair value |  | $ 25,300,000 |  | $ 25,300,000 |  |  |  |
Related Party |  |  |  |  |  |  |  |
Equity Securities [Line Items] |  |  |  |  |  |  |  |
Shares held | shares |  | 1,000,000 |  | 1,000,000 |  | 1,100,000 |  |
OCV Management, LLC |  |  |  |  |  |  |  |
Equity Securities [Line Items] |  |  |  |  |  |  |  |
Maximum exposure of investment |  | $ 99,400,000 |  | $ 99,400,000 |  | $ 112,300,000 |  |
OCV Management, LLC | Related Party |  |  |  |  |  |  |  |
Equity Securities [Line Items] |  |  |  |  |  |  |  |
Distribution from equity method investment |  |  |  | 0 | $ 0 |  |  |
Corporate Debt Securities |  |  |  |  |  |  |  |
Equity Securities [Line Items] |  |  |  |  |  |  |  |
Debt securities, available-for-sale, coupon rate |  |  |  |  |  |  | 6.00% | 4.00%
Debt securities, available-for-sale |  |  |  |  |  |  |  | $ 15,000,000
Carrying value of investment |  | 15,500,000 |  | 15,500,000 |  | 15,600,000 |  |
Maximum exposure of investment |  | $ 15,500,000 |  | $ 15,500,000 |  | $ 15,600,000 |  |

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