Fair Values of Assets and Liabilities (Narrative) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value appraisal minimum period	18 months
Weighted average adjustments related to impaired loans	25.30%	12.80%
Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Eligibility criteria of classified loans for appraisal by professional appraiser	$ 250,000