Other Benefit Plans (Narrative) (Details)	1 Months Ended	12 Months Ended
	Aug. 31, 2018 Employee Year	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Nov. 30, 2021 USD ($)
Director's Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation arrangement with individual, recorded liability		$ 1,591,000	$ 1,308,000
Salary Continuation Agreement [Member]
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation arrangement with individual, recorded liability		$ 201,000	214,000
Defined benefit plan, maximum coverage period		15 years
Cash surrender value of bank owned life insurance		$ 1,464,000	1,422,000
Split Dollar Life Insurance Arrangements [Member]
Defined Benefit Plan Disclosure [Line Items]
Cash surrender value of bank owned life insurance		1,408,000	1,404,000
Rabbi Trust | Cash [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan fair value of plan assets		7,708,000
Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation arrangement with individual, recorded liability		$ 46,000	67,000
Riverview [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, employer matching contribution, percent of match		100.00%
Defined contribution plan, employer matching contribution, percent of employees' gross pay		4.00%
Riverview [Member] | Rabbi Trust
Defined Benefit Plan Disclosure [Line Items]
Benefit plan liabilities related to compensation arrangements					$ 7,708,000
Phoenix Bancorp Incorporated [Member] | Split Dollar Life Insurance Arrangements [Member]
Defined Benefit Plan Disclosure [Line Items]
Cash surrender value of bank owned life insurance		$ 4,248,000	4,174,000
First Priority Financial Corporation [Member] | Split Dollar Life Insurance Arrangements [Member]
Defined Benefit Plan Disclosure [Line Items]
Cash surrender value of bank owned life insurance		3,575,000	3,516,000
Salaries and Benefits Expense [Member] | Salary Continuation Agreement [Member]
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation arrangement with individual, compensation expense		14,000	17,000	$ 16,000
Salaries and Benefits Expense [Member] | Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation arrangement with individual, compensation expense		1,000	3,000	4,000
Other Expense [Member] | Director's Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation arrangement with individual, compensation expense		35,000	42,000	41,000
401(k) Plan [Member] | Scottdale and First Priority [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, associated expense		$ 0
401(k) Plan [Member] | Riverview [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, employer matching contribution, percent of match		100.00%
401(k) Plan [Member] | Riverview [Member] | Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, employer matching contribution, percent of employees' gross pay		4.00%
401(k) Plan [Member] | Salaries and Benefits Expense [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, associated expense		$ 1,135,000	913,000	680,000
Scottdale Defined Benefit Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, associated expense		0	0	0
Benefit plan liabilities related to compensation arrangements		4,844,000	5,401,000	5,587,000
Defined benefit plan fair value of plan assets		5,302,000	4,939,000	5,404,000
Supplemental Executive Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, maximum coverage period	15 years
Number of executive officers covered | Employee	4
Normal retirement age | Year	70
Vesting term	one-half of the annual benefit vested on January 1, 2022, with an additional ten percent vesting on each January 1 thereafter until fully vested on January 1, 2027.
Accrued benefit liability		$ 1,207,000	595,000
Annual benefit vesting percentage		10.00%
Annual benefit percentage of executive officers		40.00%
Supplemental Executive Retirement Plan [Member] | Salaries and Benefits Expense [Member]
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation arrangement with individual, compensation expense		$ 625,000	$ 299,000	$ 223,000