Loans and Allowance for Credit Losses (Troubled Debt Restructurings With Subsequent Default) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Related allowance
Residential Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Related allowance
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Related allowance
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Related allowance
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Related allowance
Construction Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Related allowance