Fair Value Measurements - Quantitative Information, Level 3 (Details) - Nonrecurring - Impaired Loans $ in Thousands	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Fair value measurements for financial instruments measured at fair value on a non-recurring basis
Collateral-dependent loans	$ 335	$ 3,380
Level 3
Fair value measurements for financial instruments measured at fair value on a non-recurring basis
Collateral-dependent loans	$ 335	$ 3,380
Level 3 | Minimum | Comparability Adjustment
Fair value measurements for financial instruments measured at fair value on a non-recurring basis
Range of Inputs	0.000	(0.185)
Level 3 | Maximum | Comparability Adjustment
Fair value measurements for financial instruments measured at fair value on a non-recurring basis
Range of Inputs	0.000	1.735
Level 3 | Weighted Average | Comparability Adjustment
Fair value measurements for financial instruments measured at fair value on a non-recurring basis
Range of Inputs	0.000	0.368