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BORROWED FUNDS AND REPURCHASE AGREEMENTS, Collateral Pledged on the Repurchase Agreements by Contractual Maturity (Details) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2008 | Dec. 31, 2003
Remaining Contractual Maturity of Agreements [Abstract] |  |  |  |  |
Total carrying value of collateral pledged |  | $ 15,964 | $ 20,978 |  |
Total liability recognized for repurchase agreements |  | 11,298 | 17,983 |  |
Borrowed Funds And Repurchase Agreement [Abstract] |  |  |  |  |
Borrowed funds |  | 85,117 | 91,194 |  |
U.S. Agency Securities [Member] |  |  |  |  |
Remaining Contractual Maturity of Agreements [Abstract] |  |  |  |  |
Total carrying value of collateral pledged |  | 15,964 | 20,978 |  |
Overnight and Continuous [Member] |  |  |  |  |
Remaining Contractual Maturity of Agreements [Abstract] |  |  |  |  |
Total carrying value of collateral pledged |  | 15,964 | 18,970 |  |
Overnight and Continuous [Member] | U.S. Agency Securities [Member] |  |  |  |  |
Remaining Contractual Maturity of Agreements [Abstract] |  |  |  |  |
Total carrying value of collateral pledged |  | 15,964 | 18,970 |  |
Up to 30 Days [Member] |  |  |  |  |
Remaining Contractual Maturity of Agreements [Abstract] |  |  |  |  |
Total carrying value of collateral pledged |  | 0 | 0 |  |
Up to 30 Days [Member] | U.S. Agency Securities [Member] |  |  |  |  |
Remaining Contractual Maturity of Agreements [Abstract] |  |  |  |  |
Total carrying value of collateral pledged |  | 0 | 0 |  |
30 - 90 Days [Member] |  |  |  |  |
Remaining Contractual Maturity of Agreements [Abstract] |  |  |  |  |
Total carrying value of collateral pledged |  | 0 | 0 |  |
30 - 90 Days [Member] | U.S. Agency Securities [Member] |  |  |  |  |
Remaining Contractual Maturity of Agreements [Abstract] |  |  |  |  |
Total carrying value of collateral pledged |  | 0 | 0 |  |
Greater than 90 Days [Member] |  |  |  |  |
Remaining Contractual Maturity of Agreements [Abstract] |  |  |  |  |
Total carrying value of collateral pledged |  | 0 | 2,008 |  |
Greater than 90 Days [Member] | U.S. Agency Securities [Member] |  |  |  |  |
Remaining Contractual Maturity of Agreements [Abstract] |  |  |  |  |
Total carrying value of collateral pledged |  | 0 | 2,008 |  |
FHLB Advances [Member] |  |  |  |  |
Borrowed Funds And Repurchase Agreement [Abstract] |  |  |  |  |
Maximum borrowing limit |  | 547,184 |  |  |
Borrowed funds | [1] | 24,794 | 52,186 |  |
Federal Funds Line [Member] |  |  |  |  |
Borrowed Funds And Repurchase Agreement [Abstract] |  |  |  |  |
Maximum borrowing limit |  | 34,000 |  |  |
Borrowed funds | [2] | 0 | 0 |  |
FRB BIC Line [Member] |  |  |  |  |
Borrowed Funds And Repurchase Agreement [Abstract] |  |  |  |  |
Maximum borrowing limit |  | 10,902 | 9,797 |  |
Carrying value of securities pledged as collateral |  | 26,895 | 28,784 |  |
Borrowed funds | [3] | 0 | 0 |  |
Notes Payable [Member] |  |  |  |  |
Borrowed Funds And Repurchase Agreement [Abstract] |  |  |  |  |
Face amount of debt |  | $ 7,500 |  |  |
Variable rate basis |  | 3 month LIBOR |  |  |
Basis spread on variable rate |  | 2.80% |  |  |
Notional amount of derivative liability |  |  |  |  | $ 7,500
Unamortized debt issuance costs |  |  |  | $ 75 |
Borrowed funds | [4] | $ 7,500 | 7,500 |  |
Term Loans [Member] |  |  |  |  |
Borrowed Funds And Repurchase Agreement [Abstract] |  |  |  |  |
Borrowed funds | [5] | $ 41,525 | 13,525 |  |
Term Loans [Member] | February 4, 2019 [Member] |  |  |  |  |
Borrowed Funds And Repurchase Agreement [Abstract] |  |  |  |  |
Stated interest rate |  | 1.87% |  |  |
Maturity date |  | Feb. 04, 2019 |  |  |
Borrowed funds |  | $ 0 | 2,000 |  |
Term Loans [Member] | January 13, 2020 [Member] |  |  |  |  |
Borrowed Funds And Repurchase Agreement [Abstract] |  |  |  |  |
Stated interest rate |  | 1.84% |  |  |
Maturity date |  | Jan. 13, 2020 |  |  |
Borrowed funds |  | $ 20,000 | 0 |  |
Term Loans [Member] | February 3, 2021 [Member] |  |  |  |  |
Borrowed Funds And Repurchase Agreement [Abstract] |  |  |  |  |
Stated interest rate |  | 2.61% |  |  |
Maturity date |  | Feb. 03, 2021 |  |  |
Borrowed funds |  | $ 2,000 | 2,000 |  |
Term Loans [Member] | July 12, 2021 [Member] |  |  |  |  |
Borrowed Funds And Repurchase Agreement [Abstract] |  |  |  |  |
Stated interest rate |  | 3.52% |  |  |
Maturity date |  | Jul. 12, 2021 |  |  |
Borrowed funds |  | $ 2,000 | 2,000 |  |
Term Loans [Member] | August 20, 2021 [Member] |  |  |  |  |
Borrowed Funds And Repurchase Agreement [Abstract] |  |  |  |  |
Stated interest rate |  | 2.37% |  |  |
Maturity date |  | Aug. 20, 2021 |  |  |
Borrowed funds |  | $ 2,800 | 2,800 |  |
Term Loans [Member] | January 6, 2022 [Member] |  |  |  |  |
Borrowed Funds And Repurchase Agreement [Abstract] |  |  |  |  |
Stated interest rate |  | 2.08% |  |  |
Maturity date |  | Jan. 06, 2022 |  |  |
Borrowed funds |  | $ 4,725 | 4,725 |  |
Term Loans [Member] | March 28, 2024 [Member] |  |  |  |  |
Borrowed Funds And Repurchase Agreement [Abstract] |  |  |  |  |
Stated interest rate |  | 2.46% |  |  |
Maturity date |  | Mar. 28, 2024 |  |  |
Borrowed funds |  | $ 5,000 | 0 |  |
Term Loans [Member] | August 20, 2024 [Member] |  |  |  |  |
Borrowed Funds And Repurchase Agreement [Abstract] |  |  |  |  |
Stated interest rate |  | 1.69% |  |  |
Maturity date |  | Aug. 20, 2024 |  |  |
Borrowed funds |  | $ 5,000 | $ 0 |  |
[1] | FHLB Advances consist of an "Open RepoPlus" agreement with the FHLB of Pittsburgh. FHLB "Open RepoPlus" advances are short-term borrowings that bear interest based on the FHLB discount rate or Federal Funds rate, whichever is higher. The Company has a borrowing limit of $547,184,000, inclusive of any outstanding advances and letters of credit. FHLB advances are secured by a blanket security agreement that includes the Company's FHLB stock, as well as certain investment and mortgage-backed securities held in safekeeping at the FHLB and certain residential and commercial mortgage loans.
[2] | The federal funds lines consist of unsecured lines from two third party banks at market rates. The Company has a borrowing limit totaling $34,000,000, inclusive of any outstanding balances. No specific collateral is required to be pledged for these borrowings.
[3] | The Federal Reserve Bank Borrower in Custody (FRB BIC) Line consists of a borrower in custody in agreement open in January 2010 with the Federal Reserve Bank of Philadelphia secured by municipal loans maintained in the Company's possession. As of December 31, 2019 and 2018, the Company has a borrowing limit of $10,902,000 and $9,797,000 respectively, inclusive of any outstanding advances. The approximate carrying value of the municipal loan collateral was $28,784,000 and $14,590,000 as of December 31, 2018 and 2017, respectively.
[4] | In December 2003, the Company formed a special purpose entity ("Entity") to issue $7,500,000 of floating rate obligated mandatory redeemable trust preferred securities as part of a pooled offering. The rate was determined quarterly and floated based on the 3 month LIBOR plus 2.80 percent. The Entity may redeem them, in whole or in part, at face value after December 17, 2008, and on a quarterly basis thereafter. The Company borrowed the proceeds of the issuance from the Entity in December 2003 in the form of a $7,500,000 note payable. Debt issue costs of $75,000 have been capitalized and fully amortized as of December 31, 2008. Under current accounting rules, the Company's minority interest in the Entity was recorded at the initial investment amount and is included in the other assets section of the balance sheet. The Entity is not consolidated as part of the Company's consolidated financial statements.
[5] | Term Loans consist of separate loans with the FHLB of Pittsburgh as follows (dollars in thousands):

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