Allowance for Credit Losses (Collateral Dependent Loans) (Details) - USD ($)	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Threshold balance for collateral-dependent loans to be individually reviewed for impairment	$ 500,000
Collateral-Dependent Loans	51,403,000	$ 58,825,000
Net Realizable Value of Collateral	$ 75,581,000	$ 81,272,000
Collateral Coverage	147.00%	138.20%
Allowance for Credit Losses	$ 1,433,000	$ 131,000
Collateral-dependent nonaccrual loans with no allowance	45,500,000	57,500,000
Non-PCD Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependent Loans	21,826,000	16,772,000
Net Realizable Value of Collateral	$ 28,168,000	$ 23,625,000
Collateral Coverage	129.10%	140.90%
Allowance for Credit Losses	$ 1,433,000	$ 0
Non-PCD Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependent Loans	11,423,000
Net Realizable Value of Collateral	$ 14,625,000
Collateral Coverage	128.00%
Allowance for Credit Losses	$ 0
PCD Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependent Loans	18,154,000	19,042,000
Net Realizable Value of Collateral	$ 32,788,000	$ 27,872,000
Collateral Coverage	180.60%	146.40%
Allowance for Credit Losses	$ 0	$ 0
Construction and land development | Non-PCD Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependent Loans	1,424,000	1,424,000
Net Realizable Value of Collateral	$ 1,964,000	$ 1,795,000
Collateral Coverage	137.90%	126.10%
Allowance for Credit Losses	$ 0	$ 0
Owner occupied commercial mortgage | Non-PCD Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependent Loans	7,411,000	9,792,000
Net Realizable Value of Collateral	$ 8,367,000	$ 14,253,000
Collateral Coverage	112.90%	145.60%
Allowance for Credit Losses	$ 0	$ 0
Non-owner occupied commercial mortgage | Non-PCD Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependent Loans	8,204,000	5,556,000
Net Realizable Value of Collateral	$ 11,307,000	$ 7,577,000
Collateral Coverage	137.80%	136.40%
Allowance for Credit Losses	$ 1,203,000	$ 0
Commercial and industrial | Non-PCD Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependent Loans	4,787,000
Net Realizable Value of Collateral	$ 6,530,000
Collateral Coverage	136.40%
Allowance for Credit Losses	$ 230,000
Residential mortgage | Non-PCD Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependent Loans	11,423,000	23,011,000
Net Realizable Value of Collateral	$ 14,625,000	$ 29,775,000
Collateral Coverage	128.00%	129.40%
Allowance for Credit Losses	$ 0	$ 131,000
Revolving mortgage | Non-PCD Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependent Loans	0
Net Realizable Value of Collateral	$ 0
Collateral Coverage	0.00%
Allowance for Credit Losses	$ 0