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Federal Home Loan Bank and Short-term Borrowings (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 USD ($) item | Dec. 31, 2016 USD ($)
Derivative [Line Items] |  |
Number of interest rate swap designated as cash flow | item | 3 |
Notional Value | $ 20,000,000 |
Term | 5 years |
Number of derivative become effect in july and august 2018 | item | 2 |
Gain (Loss) on interest rate cash flow hedge ineffectiveness | $ 0 |
Assets/ Liabilities | 49,000 |
Unrealized Gain (Loss) AOCI | 35,000 |
Interest expense recorded on these swap transactions | 12,000 |
Fair value of cash or investment securities pledged as collateral | 750,000 | $ 0
Interest Rate Swap On FHLB Advance [Member] |  |
Derivative [Line Items] |  |
Notional Value | $ 10,000,000 |
Pay Rate | 2.105% |
Receive Rate | 3M LIBOR |
Assets/ Liabilities | $ 30,000 |
Unrealized Gain (Loss) AOCI | 21,000 |
Interest expense recorded on these swap transactions | 12,000 |
Forward-starting interest rate swap on FHLB advance maturing on July 2023 |  |
Derivative [Line Items] |  |
Notional Value | $ 5,000,000 |
Pay Rate | 2.235% |
Receive Rate | 3M LIBOR |
Assets/ Liabilities | $ 10,000 |
Unrealized Gain (Loss) AOCI | 7,000 |
Forward-starting interest rate swap on FHLB advance maturing on August 2023 |  |
Derivative [Line Items] |  |
Notional Value | $ 5,000,000 |
Pay Rate | 2.246% |
Receive Rate | 3M LIBOR |
Assets/ Liabilities | $ 9,000 |
Unrealized Gain (Loss) AOCI | $ 7,000 |

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- Definition Number of Derivative Become Effect In July and August 2018. + References No definition available. + Details
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- Definition Amount of unrealized gain (loss) related to the increase or decrease in fair value of interest rate derivatives designated as cash flow hedging instruments, which was recorded in accumulated other comprehensive income to the extent that the cash flow hedge was determined to be effective. + References No definition available. + Details
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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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