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Securities - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |  |  |  |
Realized gains on available-for-sale debt securities | $ 133,000 | $ 30,000 | $ 999,000 | $ 327,000
Realized losses on available-for-sale debt securities | 0 | 0 | 595,000 | 3,000
Realized gains on equity securities, net | 5,000 |  | 30,000 |
Realized losses on equity securities, net |  | $ 14,000 |  | $ 34,000
Federal Home Loan Bank New York (FHLBNY) |  |  |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |  |  |  |
Holdings of FHLBNY, FHLBPITT and ACBB stock, amount of advances | 13,600,000 |  | 13,600,000 |
Federal Home Loan Bank Pittsburgh (FHLBPITT) |  |  |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |  |  |  |
Holdings of FHLBNY, FHLBPITT and ACBB stock, amount of advances | 11,200,000 |  | 11,200,000 |
Atlantic Central Bankers Bank (ACBB) |  |  |  |
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items] |  |  |  |
Holdings of FHLBNY, FHLBPITT and ACBB stock, amount of advances | $ 95,000 |  | $ 95,000 |

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- Definition Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27357-111563 + Details
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- Definition Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27357-111563 + Details
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- Definition Amount of realized gain from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=116654751&loc=SL75117546-209714 + Details
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- Definition Amount of advances from the Federal Home Loan Bank (FHLB). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
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