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Securities Available for Sale (Details Textual) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 USD ($) Securities | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Securities Available for Sale (Additional Textual) [Abstract] |  |  |  |
Tax provision related to net realized gain | [1] | $ 2 | $ 26 | $ 33
Number of securities not more than 10% of stockholder equities | Securities |  | 0 |  |
Number of securities | Securities |  | 550 |  |
Number of securities on unrealized loss position | Securities |  | 184 |  |
Securities Available for Sale (Textual) [Abstract] |  |  |  |
Pledged to secure public deposits and repurchase agreements and Pledge to qualify carrying amount of securities |  | $ 269,000 | 242,000 |
Other than temporary impairment charges recognized |  | 0 | 0 | $ 0
Farmers Trust Company |  |  |  |
Securities Available for Sale (Textual) [Abstract] |  |  |  |
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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- Definition The fair value of available-for-sale securities that serve as collateral for borrowings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5086-111524 + Details
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- Definition Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e640-108580 + Details
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- Definition The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 8A -URI http://asc.fasb.org/extlink&oid=82896770&loc=SL6284422-111562 + Details
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