Fair Value Measurements - Schedule of Fair Value Measurements for Items (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value	$ 206,918	$ 229,480
Warrants Receivable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Warrants receivable	1	764
U.S. government and government agencies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	118,419	138,261
Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	72,963	88,502
Private equity investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	15,250	0
Other
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	285	1,953
Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value	0	0
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 \| Private equity investments
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	0	0
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value	191,667	228,716
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	118,419	138,261
Level 2 \| Corporate debt securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	72,963	88,502
Level 2 \| Private equity investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	0	0
Level 2 \| Other
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	285	1,953
Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total assets at fair value	15,251	764
Level 3 \| Warrants Receivable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Warrants receivable	1	764
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 \| Private equity investments
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	15,250	0
Level 3 \| Other
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities	$ 0	$ 0

CLOVER HEALTH INVESTMENTS, CORP. /DE 10-Q