Fair Value - Assets and Liabilities Subject to Fair Value Adjustments (Impairment) on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired collateral-dependent loans	$ 12,600	$ 12,000
Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired collateral-dependent loans	12,591	11,959
OREO, Net (Credit) Provision During Period		(225)
Impaired collateral-dependent loans, Net (Credit) Provision During Period	(556)	3,693
Nonrecurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Impaired collateral-dependent loans	$ 12,591	$ 11,959