Fair Value Measurements - Additional Quantitative Information (Details) $ in Thousands	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans	$ 25,372	$ 37,079
Collateral dependent loans | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans (percent)		(2.9)
Collateral dependent loans | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans (percent)		(100)
Collateral dependent loans | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Collateral dependent loans (percent)		(57.8)
Level 3 | Appraisal of collateral | OREO | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
OREO (percent)	(25.0)	(25.0)
Level 3 | Appraisal of collateral | OREO | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
OREO (percent)	(100)	(100)
Level 3 | Appraisal of collateral | OREO | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
OREO (percent)	(65.0)	(65.0)
Level 3 | Appraisal of collateral or real estate listing price | Bank property held for sale | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Bank property held for sale (percent)	(6.2)	(6.2)
Level 3 | Appraisal of collateral or real estate listing price | Bank property held for sale | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Bank property held for sale (percent)	(64.9)	(71.3)
Level 3 | Appraisal of collateral or real estate listing price | Bank property held for sale | Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Bank property held for sale (percent)	(27.3)	(40.7)
Non-recurring basis
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans	$ 1,413	$ 2,686
OREO	55	55
Bank property held for sale	3,413	4,004
Non-recurring basis | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans	1,413	2,686
OREO	55	55
Bank property held for sale	3,413	4,004
Non-recurring basis | Level 3 | Appraisal of collateral | Collateral dependent loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans	1,413	2,686
Non-recurring basis | Level 3 | Appraisal of collateral | OREO
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
OREO	55	55
Non-recurring basis | Level 3 | Appraisal of collateral or real estate listing price | Bank property held for sale
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Bank property held for sale	$ 3,413	$ 4,004