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Interest Rate Swap Derivatives (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Notional Amount | $ 250,000 | $ 250,000
Fair value | 2,256 | (692)
Other Assets [Member] | Interest Rate Swap 1 [Member] |  |
Notional Amount | 75,000 |
Fair value | $ 598 |
Pay Rate | 1.71% |
Maturity | Mar. 31, 2020 |
Receive rate basis | 1 month USD-LIBOR-BBA w/ -1 day lookback +10 basis points |
Other Assets [Member] | Interest Rate Swap 1 [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |
Spread on basis | 0.10% |
Other Assets [Member] | Interest Rate Swap 2 [Member] | Federal Funds Effective Swap Rate [Member] |  |
Spread on basis | 0.10% |
Other Assets [Member] | Interest Rate Swap 3 [Member] |  |
Notional Amount | $ 75,000 | 75,000
Fair value | $ 837 | $ 19
Pay Rate | 1.92% | 1.92%
Maturity | Mar. 31, 2022 | Mar. 31, 2022
Receive rate basis | 1 month USD-LIBOR-BBA w/ -1 day lookback +10 basis points | 1 month USD-LIBOR-BBA w/ -1 day lookback +10 basis points
Other Assets [Member] | Interest Rate Swap 3 [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |
Spread on basis | 0.10% | 0.10%
Other Liabilities [Member] | Interest Rate Swap 1 [Member] |  |
Notional Amount |  | $ 75,000
Fair value |  | $ (197)
Pay Rate |  | 1.71%
Maturity |  | Mar. 31, 2020
Receive rate basis |  | 1 month USD-LIBOR-BBA w/ -1 day lookback +10 basis points
Other Liabilities [Member] | Interest Rate Swap 1 [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |
Spread on basis |  | 0.10%
Other Liabilities [Member] | Interest Rate Swap 2 [Member] |  |
Notional Amount | $ 100,000 | $ 100,000
Fair value | $ 821 | $ (514)
Pay Rate | 1.74% | 1.74%
Maturity | Apr. 15, 2021 | Apr. 15, 2021
Receive rate basis | Federal Funds Effective Rate +10 basis points | Federal Funds Effective Rate +10 basis points
Other Liabilities [Member] | Interest Rate Swap 2 [Member] | Federal Funds Effective Swap Rate [Member] |  |
Spread on basis |  | 0.10%

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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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- Definition The percentage points added to the reference rate to compute the variable rate on the interest rate derivative. + References No definition available. + Details
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- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13495-108611 + Details
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- Definition Date the derivative contract matures, in CCYY-MM-DD format. + References No definition available. + Details
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- Definition Fixed interest rate that will be received or paid upon exercise of the interest rate swaption contract. + References No definition available. + Details
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- Definition Reference to the index or unit of measurement for the underlying which establishes the pricing terms of the derivative instrument. For example, the basis on the underlying for a natural gas futures contract might be the NYMEX price per million British thermal units (MMBtu). + References No definition available. + Details
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