Acquisition of Riverview Financial Corporation (Allocation of the Purchase Price) (Details) - USD ($)	Nov. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets acquired:
Goodwill		$ 113,835,000	$ 62,840,000	$ 62,840,000
Cash surrender value of life insurance		$ 49,661,000	$ 17,183,000
Riverview [Member]
Assets acquired:
Cash and cash equivalents	$ 316,079,000
Investment securities	226,000
Restricted stock	2,209,000
Loans	837,505,000
Goodwill	50,995,000
Core deposit intangible	4,096,000
Customer list intangible	2,160,000
Cash surrender value of life insurance	32,120,000
Premises and equipment	11,819,000
Deferred income taxes	7,110,000
Accrued interest receivable	1,919,000
Other assets	6,683,000
Total assets acquired	1,272,921,000
Liabilities assumed:
Noninterest-bearing demand	182,291,000
Interest-bearing demand	371,283,000
Money Market	152,365,000
Savings	176,294,000
Time	199,414,000
Long-term debt	6,500,000
Subordinated debt and trust preferred securities	36,308,000
Accrued interest payable	439,000
Other liabilities	5,043,000
Total liabilities assumed	1,129,937,000
Consideration paid	142,984,000
Cash paid	792,000
Business combination, consideration transferred, equity interests issued and issuable	$ 142,192,000