Loans and Allowance for Loan and Lease Losses - Summarizes of All COVID19 Loan Payment Deferment and the Percentage of Loans (Details) - COVID-19 [Member] $ in Thousands	Dec. 31, 2020 USD ($) DeferredLoan	Sep. 30, 2020 USD ($) DeferredLoan	Jun. 30, 2020 USD ($) DeferredLoan
Financing Receivable Modifications [Line Items]
As of December 31, 2020 | DeferredLoan	110	153	864
As of December 31, 2020 | $	$ 8,061	$ 18,416	$ 95,244
As of December 31, 2020	1.20%	2.90%	16.50%
Construction, Land Development and Other Land Loans [Member]
Financing Receivable Modifications [Line Items]
As of December 31, 2020 | DeferredLoan		1	7
As of December 31, 2020 | $		$ 2,259	$ 4,544
As of December 31, 2020		6.40%	14.50%
Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Modifications [Line Items]
As of December 31, 2020 | DeferredLoan	6	8	50
As of December 31, 2020 | $	$ 314	$ 398	$ 9,474
As of December 31, 2020	0.40%	0.40%	10.20%
Secured By Multi family Residential Properties [Member]
Financing Receivable Modifications [Line Items]
As of December 31, 2020 | DeferredLoan			12
As of December 31, 2020 | $			$ 29,726
As of December 31, 2020			60.90%
Secured By Non-farm Non residential Properties [Member]
Financing Receivable Modifications [Line Items]
As of December 31, 2020 | DeferredLoan	6	10	49
As of December 31, 2020 | $	$ 6,615	$ 14,084	$ 42,797
As of December 31, 2020	3.60%	7.70%	26.60%
Commercial and Industrial Loans [Member]
Financing Receivable Modifications [Line Items]
As of December 31, 2020 | DeferredLoan	2	2	9
As of December 31, 2020 | $	$ 530	$ 529	$ 1,460
As of December 31, 2020	0.60%	0.60%	1.70%
Consumer Portfolio Segment | Direct Consumer [Member]
Financing Receivable Modifications [Line Items]
As of December 31, 2020 | DeferredLoan	50	77	442
As of December 31, 2020 | $	$ 201	$ 284	$ 2,188
As of December 31, 2020	0.70%	0.90%	6.60%
Consumer Portfolio Segment | Branch Retail [Member]
Financing Receivable Modifications [Line Items]
As of December 31, 2020 | DeferredLoan	43	36	172
As of December 31, 2020 | $	$ 336	$ 353	$ 1,856
As of December 31, 2020	1.00%	1.10%	5.60%
Consumer Portfolio Segment | Indirect Sales [Member]
Financing Receivable Modifications [Line Items]
As of December 31, 2020 | DeferredLoan	3	19	123
As of December 31, 2020 | $	$ 65	$ 509	$ 3,199
As of December 31, 2020	0.10%	0.40%	3.60%