Fair Value Measurements - Quantitative (Details) - Fair Value, Measurements, Nonrecurring - Level 3 Inputs - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans (collateral dependent)	$ 6,592	$ 12,647
Individually evaluated loans (collateral dependent) \| Appraisal adjustments \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans (collateral dependent), unobservable input value or range	15.00%
Individually evaluated loans (collateral dependent) \| Appraisal adjustments \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans (collateral dependent), unobservable input value or range	75.00%
Individually evaluated loans (collateral dependent) \| Appraisal of collateral
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans (collateral dependent)	$ 6,592	$ 12,647

ENTERPRISE BANCORP INC /MA/ 10-Q