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Loans and Allowance for Loan Losses - Summarizes of All COVID19 Loan Payment Deferment and the Percentage of Loans (Details) - COVID-19 [Member] $ in Thousands | Apr. 30, 2020 USD ($) DeferredLoan | Mar. 31, 2020
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Financing Receivable Modifications [Line Items] |  |
Percentage of Portfolio Balance as of March 31, 2020 |  | 20.90%
Subsequent Event [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Number of Loans Deferred | DeferredLoan | 1,433 |
Principal Balance of Loans Deferred | $ 114,990 |
Principal and Interest Deferments | 81,929 |
Principal Only Deferments | $ 33,061 |
Construction, Land Development and Other Land Loans [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Percentage of Portfolio Balance as of March 31, 2020 |  | 52.20%
Construction, Land Development and Other Land Loans [Member] | Subsequent Event [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Number of Loans Deferred | DeferredLoan | 3 |
Principal Balance of Loans Deferred | $ 16,666 |
Principal and Interest Deferments | 9,513 |
Principal Only Deferments | $ 7,153 |
Secured by 1-4 Family Residential Properties [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Percentage of Portfolio Balance as of March 31, 2020 |  | 11.50%
Secured by 1-4 Family Residential Properties [Member] | Subsequent Event [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Number of Loans Deferred | DeferredLoan | 71 |
Principal Balance of Loans Deferred | $ 11,549 |
Principal and Interest Deferments | 9,368 |
Principal Only Deferments | $ 2,181 |
Secured By Multi family Residential Properties [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Percentage of Portfolio Balance as of March 31, 2020 |  | 55.60%
Secured By Multi family Residential Properties [Member] | Subsequent Event [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Number of Loans Deferred | DeferredLoan | 11 |
Principal Balance of Loans Deferred | $ 24,482 |
Principal and Interest Deferments | 5,421 |
Principal Only Deferments | $ 19,061 |
Secured By Non-farm Non residential Properties [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Percentage of Portfolio Balance as of March 31, 2020 |  | 31.90%
Secured By Non-farm Non residential Properties [Member] | Subsequent Event [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Number of Loans Deferred | DeferredLoan | 53 |
Principal Balance of Loans Deferred | $ 49,851 |
Principal and Interest Deferments | 45,575 |
Principal Only Deferments | $ 4,276 |
Commercial and Industrial Loans [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Percentage of Portfolio Balance as of March 31, 2020 |  | 2.00%
Commercial and Industrial Loans [Member] | Subsequent Event [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Number of Loans Deferred | DeferredLoan | 12 |
Principal Balance of Loans Deferred | $ 1,645 |
Principal and Interest Deferments | 1,255 |
Principal Only Deferments | $ 390 |
Consumer Portfolio Segment [Member] | Direct Consumer [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Percentage of Portfolio Balance as of March 31, 2020 |  | 10.40%
Consumer Portfolio Segment [Member] | Direct Consumer [Member] | Subsequent Event [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Number of Loans Deferred | DeferredLoan | 830 |
Principal Balance of Loans Deferred | $ 3,774 |
Principal and Interest Deferments | $ 3,774 |
Consumer Portfolio Segment [Member] | Branch Retail [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Percentage of Portfolio Balance as of March 31, 2020 |  | 8.90%
Consumer Portfolio Segment [Member] | Branch Retail [Member] | Subsequent Event [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Number of Loans Deferred | DeferredLoan | 283 |
Principal Balance of Loans Deferred | $ 2,825 |
Principal and Interest Deferments | $ 2,825 |
Consumer Portfolio Segment [Member] | Indirect Sales [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Percentage of Portfolio Balance as of March 31, 2020 |  | 6.00%
Consumer Portfolio Segment [Member] | Indirect Sales [Member] | Subsequent Event [Member] |  |
Financing Receivable Modifications [Line Items] |  |
Number of Loans Deferred | DeferredLoan | 170 |
Principal Balance of Loans Deferred | $ 4,198 |
Principal and Interest Deferments | $ 4,198 |

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