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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	Sep. 30, 2020 USD ($) DeferredLoan	Jun. 30, 2020 USD ($) DeferredLoan
Financing Receivable Modifications [Line Items]
Number of Loans Deferred | DeferredLoan	153	864
Principal Balance of Loans Deferred | $	$ 18,416	$ 95,244
Percentage of Portfolio Balance as of September 30, 2020	2.90%	16.50%
Construction, Land Development and Other Land Loans [Member]
Financing Receivable Modifications [Line Items]
Number of Loans Deferred | DeferredLoan	1	7
Principal Balance of Loans Deferred | $	$ 2,259	$ 4,544
Percentage of Portfolio Balance as of September 30, 2020	6.40%	14.50%
Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Modifications [Line Items]
Number of Loans Deferred | DeferredLoan	8	50
Principal Balance of Loans Deferred | $	$ 398	$ 9,474
Percentage of Portfolio Balance as of September 30, 2020	0.40%	10.20%
Secured By Multi family Residential Properties [Member]
Financing Receivable Modifications [Line Items]
Number of Loans Deferred | DeferredLoan		12
Principal Balance of Loans Deferred | $		$ 29,726
Percentage of Portfolio Balance as of September 30, 2020		60.90%
Secured By Non-farm Non residential Properties [Member]
Financing Receivable Modifications [Line Items]
Number of Loans Deferred | DeferredLoan	10	49
Principal Balance of Loans Deferred | $	$ 14,084	$ 42,797
Percentage of Portfolio Balance as of September 30, 2020	7.70%	26.60%
Commercial and Industrial Loans [Member]
Financing Receivable Modifications [Line Items]
Number of Loans Deferred | DeferredLoan	2	9
Principal Balance of Loans Deferred | $	$ 529	$ 1,460
Percentage of Portfolio Balance as of September 30, 2020	0.60%	1.70%
Consumer Portfolio Segment [Member] | Direct Consumer [Member]
Financing Receivable Modifications [Line Items]
Number of Loans Deferred | DeferredLoan	77	442
Principal Balance of Loans Deferred | $	$ 284	$ 2,188
Percentage of Portfolio Balance as of September 30, 2020	0.90%	6.60%
Consumer Portfolio Segment [Member] | Branch Retail [Member]
Financing Receivable Modifications [Line Items]
Number of Loans Deferred | DeferredLoan	36	172
Principal Balance of Loans Deferred | $	$ 353	$ 1,856
Percentage of Portfolio Balance as of September 30, 2020	1.10%	5.60%
Consumer Portfolio Segment [Member] | Indirect Sales [Member]
Financing Receivable Modifications [Line Items]
Number of Loans Deferred | DeferredLoan	19	123
Principal Balance of Loans Deferred | $	$ 509	$ 3,199
Percentage of Portfolio Balance as of September 30, 2020	0.40%	3.60%

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