Fair Value Measurements - Hierarchy for Assets and Liabilities on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Payment-dependent notes receivable	$ 9,604	$ 7,412
Payment-dependent notes payable	9,604	7,412
Warrant liabilities	296	192
Fair Value, Recurring
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Payment-dependent notes receivable	9,604	7,412
Term deposits	1,083	1,068
Total financial assets	64,762	93,568
Payment-dependent notes payable	9,604	7,412
Total financial liabilities	9,900	7,604
Fair Value, Recurring | December 2023 Warrants
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Warrant liabilities	30	45
Fair Value, Recurring | Private Placement Warrants
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Warrant liabilities	266	147
Fair Value, Recurring | Corporate debt securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments	13,430
Fair Value, Recurring | U.S. government securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments	497
Fair Value, Recurring | U.S. government agency bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments	12,466
Fair Value, Recurring | Money market funds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	15,451	56,300
Fair Value, Recurring | Corporate debt securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	2,601
Fair Value, Recurring | U.S. government securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents		21,482
Fair Value, Recurring | U.S. government agency bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	2,305
Fair Value, Recurring | Term deposits (less than 90 days)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	7,325	7,306
Fair Value, Recurring | Level 1
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Payment-dependent notes receivable	0	0
Term deposits	0	0
Total financial assets	15,451	77,782
Payment-dependent notes payable	0	0
Total financial liabilities	0	0
Fair Value, Recurring | Level 1 | December 2023 Warrants
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Warrant liabilities	0	0
Fair Value, Recurring | Level 1 | Private Placement Warrants
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Warrant liabilities	0	0
Fair Value, Recurring | Level 1 | Corporate debt securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments	0
Fair Value, Recurring | Level 1 | U.S. government securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments	0
Fair Value, Recurring | Level 1 | U.S. government agency bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments	0
Fair Value, Recurring | Level 1 | Money market funds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	15,451	56,300
Fair Value, Recurring | Level 1 | Corporate debt securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	0
Fair Value, Recurring | Level 1 | U.S. government securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents		21,482
Fair Value, Recurring | Level 1 | U.S. government agency bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	0
Fair Value, Recurring | Level 1 | Term deposits (less than 90 days)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	0	0
Fair Value, Recurring | Level 2
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Payment-dependent notes receivable	0	0
Term deposits	1,083	1,068
Total financial assets	39,707	8,374
Payment-dependent notes payable	0	0
Total financial liabilities	30	45
Fair Value, Recurring | Level 2 | December 2023 Warrants
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Warrant liabilities	30	45
Fair Value, Recurring | Level 2 | Private Placement Warrants
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Warrant liabilities	0	0
Fair Value, Recurring | Level 2 | Corporate debt securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments	13,430
Fair Value, Recurring | Level 2 | U.S. government securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments	497
Fair Value, Recurring | Level 2 | U.S. government agency bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments	12,466
Fair Value, Recurring | Level 2 | Money market funds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	0	0
Fair Value, Recurring | Level 2 | Corporate debt securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	2,601
Fair Value, Recurring | Level 2 | U.S. government securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents		0
Fair Value, Recurring | Level 2 | U.S. government agency bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	2,305
Fair Value, Recurring | Level 2 | Term deposits (less than 90 days)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	7,325	7,306
Fair Value, Recurring | Level 3
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Payment-dependent notes receivable	9,604	7,412
Term deposits	0	0
Total financial assets	9,604	7,412
Payment-dependent notes payable	9,604	7,412
Total financial liabilities	9,870	7,559
Fair Value, Recurring | Level 3 | December 2023 Warrants
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Warrant liabilities	0	0
Fair Value, Recurring | Level 3 | Private Placement Warrants
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Warrant liabilities	266	147
Fair Value, Recurring | Level 3 | Corporate debt securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments	0
Fair Value, Recurring | Level 3 | U.S. government securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments	0
Fair Value, Recurring | Level 3 | U.S. government agency bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments	0
Fair Value, Recurring | Level 3 | Money market funds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	0	0
Fair Value, Recurring | Level 3 | Corporate debt securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	0
Fair Value, Recurring | Level 3 | U.S. government securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents		0
Fair Value, Recurring | Level 3 | U.S. government agency bonds
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	0
Fair Value, Recurring | Level 3 | Term deposits (less than 90 days)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	$ 0	$ 0