Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Line Items]
Net operating loss carryforwards		$ 119,000	$ 3,008,000
Income tax impacts of the components of other comprehensive income		21.00%	21.00%	21.00%
Effective income tax rate reconciliation at federal federal tax benefit		$ 6,581,000	$ 4,499,000	$ 2,672,000
Charitable contribution carryforwards		0	785,000
Charitable contribution carryforwards written off			211,000
Additional tax expense recorded related to charitable contribution carryforwards	$ 44,000
Unrecognized tax benefits that would affect the effective income tax rate if recognized		0
Income tax examination, penalties and interest expense		0	0	$ 0
Income tax examination, penalties and interest accrued		0	$ 0
CARES Act [Member]
Income Taxes [Line Items]
Income tax impacts of the components of other comprehensive income				21.00%	34.00%
Effective income tax rate reconciliation at federal federal tax benefit		$ 318,000
Tax Cuts and Jobs Act, pre NOL taxable income percentage		0.80
Tax credit carryforwards alternative minimum tax refundable percent				100.00%
Scottdale Bank and Trust Company [Member]
Income Taxes [Line Items]
Taxable income related to acquisition		$ 1,313,000
Scottdale Bank and Trust Company [Member] | CARES Act [Member]
Income Taxes [Line Items]
Net operating loss carryforwards				$ 1,238,000
First Priority Financial Corp. [Member]
Income Taxes [Line Items]
Taxable income related to acquisition		1,854,000
Acquired Section 1231 losses		$ 314,000
Acquired section 1231 losses, expire period		2022
First Priority Financial Corp. [Member] | CARES Act [Member]
Income Taxes [Line Items]
Net operating loss carryforwards		$ 119,000		$ 1,214,000
Net operating loss carryforwards expiration period		expires in 2032