Fair Value Measurements - Schedule of Fair Value Measurements for Items (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value	$ 216,003	$ 221,724
Warrants receivable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Warrants receivable	814	814
U.S. government and government agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	135,364	123,714
Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	77,944	95,343
Other
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	1,881	1,853
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value	1,881	1,853
Level 1 | Warrants receivable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Warrants receivable	0	0
Level 1 | U.S. government and government agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	0	0
Level 1 | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	0	0
Level 1 | Other
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	1,881	1,853
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value	213,308	219,057
Level 2 | Warrants receivable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Warrants receivable	0	0
Level 2 | U.S. government and government agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	135,364	123,714
Level 2 | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	77,944	95,343
Level 2 | Other
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	0	0
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value	814	814
Level 3 | Warrants receivable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Warrants receivable	814	814
Level 3 | U.S. government and government agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	0	0
Level 3 | Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	0	0
Level 3 | Other
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	$ 0	$ 0