v3.25.3

Fair Value Measurements - Narrative (Details) $ in Thousands	Sep. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long-term debt	$ 22,941
Measurement Input, Long-Term Revenue Growth Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Warrant liability, measurement input	0.38
Amended Loan Agreement \| Level 2 \| Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long-term debt	$ 21,600
Debt instrument	24,700
Equipment Notes Payable
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Notes payable	$ 1,400	$ 1,100

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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EXAGEN INC. 10-Q