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Securities Available for Sale (Details Textual) $ in Thousands		12 Months Ended
		Dec. 31, 2019 USD ($) Securities	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Schedule Of Available For Sale Securities [Line Items]
Tax provision related to net realized gain	[1]	$ (2)	$ 59	$ 2
Pledged to secure public deposits and repurchase agreements and Pledge to qualify carrying amount of securities		$ 253,000	194,000
Number of securities not more than 10% of stockholder equities | Securities		0
Equity securities		$ 7,909	7,130
Other than temporary impairment charges recognized				0
Number of securities | Securities		596
Number of securities on unrealized loss position | Securities		83
Small Business Investment Company Partnership Investments
Schedule Of Available For Sale Securities [Line Items]
Equity securities				7,300
Local and Regional Bank Holdings and Other Miscellaneous Equity Funds
Schedule Of Available For Sale Securities [Line Items]
Equity securities				$ 600
Farmers Trust Company
Schedule Of Available For Sale Securities [Line Items]
Pledged to secure public deposits and repurchase agreements and Pledge to qualify carrying amount of securities		$ 100	$ 100
[1] Pre-tax reclassification adjustments relating to available-for-sale securities are reported in security gains and the tax impact is included in income tax expense on the consolidated statements of income.

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-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-Subparagraph (b)(1)(i)
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-Name Accounting Standards Codification
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-Section 45
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Amount of other-than-temporary impairment (OTTI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), recognized in earnings.

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