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Securities - Securities Sold (Details) - USD ($) | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Debt Securities, Available-for-sale [Line Items] |  |
Carrying Value | $ 154,034,000 |
Net Proceeds | 155,391,000 | $ 0
Gain/(Loss) | 1,357,000 |
Obligations of states and political subdivisions |  |
Debt Securities, Available-for-sale [Line Items] |  |
Carrying Value | 47,000 |
Net Proceeds | 50,000 |
Gain/(Loss) | 3,000 |
Residential mortgage backed securities: | Government agency mortgage backed securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Carrying Value | 136,340,000 |
Net Proceeds | 139,735,000 |
Gain/(Loss) | 3,395,000 |
Residential mortgage backed securities: | Government agency collateralized mortgage obligations |  |
Debt Securities, Available-for-sale [Line Items] |  |
Carrying Value | 5,626,000 |
Net Proceeds | 5,646,000 |
Gain/(Loss) | 20,000 |
Trust preferred securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Carrying Value | 12,021,000 |
Net Proceeds | 9,960,000 |
Gain/(Loss) | $ (2,061,000) |

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- Definition Amount of realized gain (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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27357-111563 + Details
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