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Securities - Schedule of Required Fair Value Disclosures for Equity Securities (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2019
Equity Securities, FV-NI, Realized Gain (Loss) [Roll Forward] |  |  |  |
Fair value at beginning of period | $ 2,106 |  | $ 1,839 |
Fair value at beginning of period, including equity securities acquired in business combination |  |  |  | $ 2,363
Unrealized Gains | 16 | $ 53 | 267 |
Unrealized Losses | 491 | 20 | 0 |
Fair value at end of period | 1,888 | 1,872 |  |
CRA Mutual Fund |  |  |  |
Equity Securities, FV-NI, Realized Gain (Loss) [Roll Forward] |  |  |  |
Fair value at beginning of period | 1,045 |  | 1,012 |
Fair value at beginning of period, including equity securities acquired in business combination |  |  |  | 1,045
Unrealized Gains | 16 | 16 | 33 |
Unrealized Losses | 0 | 0 | 0 |
Fair value at end of period | 1,061 | 1,028 |  |
Stock in other banks |  |  |  |
Equity Securities, FV-NI, Realized Gain (Loss) [Roll Forward] |  |  |  |
Fair value at beginning of period | 1,061 |  | 827 |
Fair value at beginning of period, including equity securities acquired in business combination |  |  |  | $ 1,318
Unrealized Gains | 0 | 37 | 234 |
Unrealized Losses | 491 | 20 | $ 0 |
Fair value at end of period | $ 827 | $ 844 |  |

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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), including equity securities acquired in business combination. + References No definition available. + Details
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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740 + Details
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- Definition Amount of unrealized gain on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=116654751&loc=SL75117546-209714 + Details
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