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Acquisition (Narrative) (Details) $ / shares in Units, $ in Thousands |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
May 01, 2020 USD ($) item $ / shares shares | Mar. 31, 2020 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Business Acquisition [Line Items] |  |  |  |  |
Assets |  | $ 1,062,495 |  |  | $ 1,009,927
Total deposits |  | 919,661 |  |  | $ 835,737
Merger-related expenses |  | $ 273 | $ 19 |  |
Forecast [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Estimated non-recurring costs to facilitate merger and integrate |  |  |  | $ 1,800 |
Subsequent Event [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Number of businesses combined in acquisition | item | 2 |  |  |  |
Assets | $ 1,600,000 |  |  |  |
Total deposits | 1,400,000 |  |  |  |
Loans | $ 1,100,000 |  |  |  |
Subsequent Event [Member] | MNB Corporation [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Conversion | $ / shares | $ 43.767 |  |  |  |
Shares issued | shares | 1,176,993 |  |  |  |
Number of branches operated by acquiree | item | 9 |  |  |  |
Number of shares issuable per share of acquiree common stock | shares | 1.039 |  |  |  |

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(11)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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