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Fair Value Disclosures Fair Value Disclosures - Unobservable Inputs (Details) $ in Thousands	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans	$ 3,860	$ 671
Foreclosed assets	2,066	2,495
Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans	3,860	671
Foreclosed assets	$ 2,066	$ 2,495
Weighted Average [Member] \| Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Impaired loans, measurement input	0.07	0.44
Foreclosed assets, measurement input	0.20	0.23