Allowance for Credit Losses (Collateral Dependent Loans) (Details)	Mar. 31, 2020 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Threshold balance for collateral-dependent loans to be individually reviewed for impairment	$ 500,000
Collateral-Dependant Loans	47,966,000
Net Realizable Value of Collateral	$ 87,471,000
Collateral Coverage	182.40%
Allowance for Credit Losses	$ 1,029,000
Non-PCD Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans	36,509,000
Net Realizable Value of Collateral	$ 67,917,000
Collateral Coverage	186.00%
Allowance for Credit Losses	$ 332,000
Non-PCD Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans	17,717,000
Net Realizable Value of Collateral	$ 41,308,000
Collateral Coverage	233.20%
Allowance for Credit Losses	$ 215,000
Non-PCD Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans	18,792,000
Net Realizable Value of Collateral	$ 26,609,000
Collateral Coverage	141.60%
Allowance for Credit Losses	$ 117,000
PCD Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans	11,457,000
Net Realizable Value of Collateral	$ 19,554,000
Collateral Coverage	170.70%
Allowance for Credit Losses	$ 697,000
Construction and land development | Non-PCD Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans	3,522,000
Net Realizable Value of Collateral	$ 8,928,000
Collateral Coverage	253.50%
Allowance for Credit Losses	$ 215,000
Construction and land development | Non-PCD Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans	1,412,000
Net Realizable Value of Collateral	$ 1,558,000
Collateral Coverage	110.30%
Allowance for Credit Losses	$ 0
Owner occupied commercial mortgage | Non-PCD Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans	9,139,000
Net Realizable Value of Collateral	$ 21,686,000
Collateral Coverage	237.30%
Allowance for Credit Losses	$ 0
Non-owner occupied commercial mortgage | Non-PCD Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans	4,617,000
Net Realizable Value of Collateral	$ 10,255,000
Collateral Coverage	222.10%
Allowance for Credit Losses	$ 0
Commercial and industrial | Non-PCD Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans	439,000
Net Realizable Value of Collateral	$ 439,000
Collateral Coverage	100.00%
Allowance for Credit Losses	$ 0
Residential mortgage | Non-PCD Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans	16,952,000
Net Realizable Value of Collateral	$ 24,599,000
Collateral Coverage	145.10%
Allowance for Credit Losses	$ 117,000
Revolving mortgage | Non-PCD Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Collateral-Dependant Loans	428,000
Net Realizable Value of Collateral	$ 452,000
Collateral Coverage	105.60%
Allowance for Credit Losses	$ 0