Acquisition of Riverview Financial Corporation (Narrative) (Details) - USD ($)			12 Months Ended
	Nov. 30, 2021	Nov. 24, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Goodwill			$ 113,835,000	$ 62,840,000	$ 62,840,000
Intangible amortization			1,180,000	1,398,000	1,430,000
Goodwill, Impairment Loss			0	0	0
Core Deposits [Member]
Business Acquisition [Line Items]
Core deposit intangible			4,096,000
Intangible amortization			1,125,000	1,215,000	$ 1,367,000
Customer Lists Intangible [Member]
Business Acquisition [Line Items]
Core deposit intangible			2,160,000
Intangible amortization			33,000
Riverview [Member]
Business Acquisition [Line Items]
Acquisition completion date	Nov. 30, 2021
Shares of acquirer ratio of common stock	48.33%
Business combination, consideration transferred, equity interests issued and issuable	$ 142,192,000
Restricted stock shares paid out in cash	2,500
Payments to acquire businesses gross	$ 792,000
Business combination consideration transferred	142,984,000
Goodwill	50,995,000
Core deposit intangible	4,096,000
Customer list intangible	$ 2,160,000
Acquired finite-lived intangible assets, weighted average useful life	10 years
Finite-lived intangible assets, amortization expense, next twelve months	$ 738,000
Finite-lived intangible assets, amortization expense, year two	664,000
Finite-lived intangible assets, amortization expense, year three	590,000
Finite-lived intangible assets, amortization expense, year four	515,000
Finite-lived intangible assets, amortization expense, year five	440,000
Finite lived intangible assets, amortization expense, four years after year five	1,087,000
Fair value of purchased loans	$ 837,505,000
Pro forma earnings			57,150,000	35,139,000
Riverview [Member] | Excluded Acquisition-related Costs [Member]
Business Acquisition [Line Items]
Pro forma earnings				3,067,000
Goodwill, Impairment Loss				$ 24,754,000
Riverview [Member] | Core Deposits [Member]
Business Acquisition [Line Items]
Intangible amortization			62,000
Riverview [Member] | Customer Lists Intangible [Member]
Business Acquisition [Line Items]
Intangible amortization			$ 33,000
Acquired finite-lived intangible assets, weighted average useful life	10 years
Finite-lived intangible assets, amortization expense, next twelve months	$ 389,000
Finite-lived intangible assets, amortization expense, year two	350,000
Finite-lived intangible assets, amortization expense, year three	310,000
Finite-lived intangible assets, amortization expense, year four	272,000
Finite-lived intangible assets, amortization expense, year five	232,000
Finite lived intangible assets, amortization expense, four years after year five	574,000
Riverview [Member] | Common Stock [Member]
Business Acquisition [Line Items]
Business combination, consideration transferred, equity interests issued and issuable	$ 142,192,000
Per share price	$ 31.46	$ 30.76
Options outstanding to purchase common stock		172,964
Riverview [Member] | Stock Awards [Member]
Business Acquisition [Line Items]
Payments to acquire businesses gross	$ 776,000
Riverview [Member] | Fractional Shares [Member]
Business Acquisition [Line Items]
Payments to acquire businesses gross	$ 16,000