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Financial Derivative Instruments (Details) | Jun. 30, 2019 USD ($) derivative | Dec. 31, 2018 USD ($) derivative
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Derivative [Line Items] |  |
Number of derivative instruments | derivative | 1 |
Not Designated as Hedging Instrument | Customer loan interest swap agreements |  |
Derivative [Line Items] |  |
Fair Value | $ 0 | $ 0
Number of derivative instruments | derivative | 2 | 0
Derivative notional amount | $ 25,828,000 | $ 0
Other Assets | Not Designated as Hedging Instrument | Customer loan interest swap agreements |  |
Derivative [Line Items] |  |
Fair Value | $ 991,000 | $ 0
Number of derivative instruments | derivative | 1 | 0
Derivative notional amount | $ 12,914,000 | $ 0
Other Liabilities | Not Designated as Hedging Instrument | Customer loan interest swap agreements |  |
Derivative [Line Items] |  |
Fair Value | $ (991,000) | $ 0
Number of derivative instruments | derivative | 1 | 0
Derivative notional amount | $ 12,914,000 | $ 0
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap June 27 2021 |  |
Derivative [Line Items] |  |
Notional Amount | $ 20,000,000 | 20,000,000
Fixed Rate Paid | 0.893% |
Fair Value | $ 300,000 | 763,000
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap June 28 2021 |  |
Derivative [Line Items] |  |
Notional Amount | $ 30,000,000 | 30,000,000
Fixed Rate Paid | 0.94% |
Fair Value | $ 423,000 | 1,110,000
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap December 5 2019 |  |
Derivative [Line Items] |  |
Notional Amount | $ 25,000,000 | 25,000,000
Fixed Rate Paid | 2.466% |
Fair Value | $ (45,000) | 16,000
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap June 5 2020 |  |
Derivative [Line Items] |  |
Notional Amount | $ 25,000,000 | 25,000,000
Fixed Rate Paid | 2.547% |
Fair Value | $ (160,000) | (9,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap December 5 2020 |  |
Derivative [Line Items] |  |
Notional Amount | $ 25,000,000 | 25,000,000
Fixed Rate Paid | 2.603% |
Fair Value | $ (313,000) | (60,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap December 5 2022 |  |
Derivative [Line Items] |  |
Notional Amount | $ 25,000,000 | 0
Fixed Rate Paid | 1.779% |
Fair Value | $ (110,000) | 0
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap |  |
Derivative [Line Items] |  |
Notional Amount | 150,000,000 | 125,000,000
Fair Value | 95,000 | $ 1,820,000
Cash Flow Hedging | Not Designated as Hedging Instrument | Customer loan interest swap agreements |  |
Derivative [Line Items] |  |
Collateral posted | $ 1,400,000 |

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