LHFI and ACL, LHFI - Summary of Amortized Cost Basis of Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	$ 744,737	$ 4,259,096
Term Loans by Origination Year, Before Latest Fiscal Year	4,086,788	2,453,559
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	2,385,101	1,652,970
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	1,611,584	824,439
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	781,457	354,522
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	1,367,597	1,110,471
Financing Receivable, Revolving Loans	1,519,931	1,548,982
Total LHFI	12,497,195	12,204,039
Past Due 90 Days or More [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	23,097	29,005
Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	1,914,137	1,821,259
Commercial and Industrial Loans [Member] | Past Due 90 Days or More [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	883	8,974
State and Other Political Subdivision Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	1,193,727	1,223,863
State and Other Political Subdivision Loans [Member] | Past Due 90 Days or More [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	0	0
Other Commercial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	453,941	471,930
Other Commercial Loans [Member] | Past Due 90 Days or More [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	118	24
Consumer Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	166,464	170,230
Consumer Loans [Member] | Past Due 90 Days or More [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	286	279
Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	682,214	690,616
Loans Secured by Real Estate [Member] | Other Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	595,520	590,790
Loans Secured by Real Estate [Member] | Other Real Estate Secured [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	847,527	742,538
Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	3,375,579	3,278,830
Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Past Due 90 Days or More [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	1,093	794
Other Loans Secured by Real Estate [Member] | Other Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	1,041,558	1,028,926
Other Loans Secured by Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	2,226,528	2,185,057
Commercial LHFI [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	615,105	3,152,466
Term Loans by Origination Year, Before Latest Fiscal Year	3,025,263	1,817,851
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	1,770,869	1,430,035
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	1,395,466	703,273
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	662,546	265,157
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	1,011,775	828,918
Financing Receivable, Revolving Loans	1,054,428	1,081,499
Total LHFI	9,535,452	9,279,199
Commercial LHFI [Member] | Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	174,523	681,061
Term Loans by Origination Year, Before Latest Fiscal Year	730,381	271,860
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	224,087	134,724
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	103,553	45,310
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	41,629	14,374
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	56,952	69,078
Financing Receivable, Revolving Loans	583,012	604,852
Total LHFI	1,914,137	1,821,259
Commercial LHFI [Member] | Commercial and Industrial Loans [Member] | Pass - RR 1 through RR 6 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	174,523	673,848
Term Loans by Origination Year, Before Latest Fiscal Year	723,562	261,962
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	214,009	120,123
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	89,717	44,994
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	41,429	14,265
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	56,865	69,078
Financing Receivable, Revolving Loans	556,025	577,749
Total LHFI	1,856,130	1,762,019
Commercial LHFI [Member] | Commercial and Industrial Loans [Member] | Special Mention - RR 7 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Before Latest Fiscal Year	11
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	225	12,421
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	12,005
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	25
Financing Receivable, Revolving Loans	6,489	6,454
Total LHFI	18,755	18,875
Commercial LHFI [Member] | Commercial and Industrial Loans [Member] | Substandard - RR 8 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year		6,973
Term Loans by Origination Year, Before Latest Fiscal Year	6,646	9,845
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	9,803	2,170
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	1,826	312
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	175	74
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	55
Financing Receivable, Revolving Loans	20,485	20,625
Total LHFI	38,990	39,999
Commercial LHFI [Member] | Commercial and Industrial Loans [Member] | Doubtful - RR 9 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year		240
Term Loans by Origination Year, Before Latest Fiscal Year	162	53
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	50	10
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	5	4
Term Loans by Origination Year, Four Years Before Latest Fiscal Year		35
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	32
Financing Receivable, Revolving Loans	13	24
Total LHFI	262	366
Commercial LHFI [Member] | State and Other Political Subdivision Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	14,837	393,345
Term Loans by Origination Year, Before Latest Fiscal Year	354,676	223,302
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	222,697	123,350
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	121,049	39,031
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	38,350	18,876
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	432,774	424,288
Financing Receivable, Revolving Loans	9,344	1,671
Total LHFI	1,193,727	1,223,863
Commercial LHFI [Member] | State and Other Political Subdivision Loans [Member] | Pass - RR 1 through RR 6 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	14,837	393,345
Term Loans by Origination Year, Before Latest Fiscal Year	354,676	223,302
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	222,697	123,350
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	121,049	39,031
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	38,350	18,876
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	432,774	421,588
Financing Receivable, Revolving Loans	9,344	1,671
Total LHFI	1,193,727	1,221,163
Commercial LHFI [Member] | State and Other Political Subdivision Loans [Member] | Special Mention - RR 7 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year		2,700
Total LHFI		2,700
Commercial LHFI [Member] | Other Commercial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	16,017	93,394
Term Loans by Origination Year, Before Latest Fiscal Year	80,994	40,104
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	34,604	28,239
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	26,447	37,607
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	34,269	6,440
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	14,695	11,963
Financing Receivable, Revolving Loans	246,915	254,183
Total LHFI	453,941	471,930
Commercial LHFI [Member] | Other Commercial Loans [Member] | Pass - RR 1 through RR 6 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	16,001	88,763
Term Loans by Origination Year, Before Latest Fiscal Year	76,463	40,006
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	34,515	28,239
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	26,447	37,607
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	34,269	6,424
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	13,591	10,829
Financing Receivable, Revolving Loans	237,774	244,882
Total LHFI	439,060	456,750
Commercial LHFI [Member] | Other Commercial Loans [Member] | Special Mention - RR 7 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year		879
Total LHFI		879
Commercial LHFI [Member] | Other Commercial Loans [Member] | Substandard - RR 8 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	16	3,728
Term Loans by Origination Year, Before Latest Fiscal Year	4,507	98
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	89
Term Loans by Origination Year, Four Years Before Latest Fiscal Year		16
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	1,104	1,134
Financing Receivable, Revolving Loans	9,141	9,301
Total LHFI	14,857	14,277
Commercial LHFI [Member] | Other Commercial Loans [Member] | Doubtful - RR 9 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year		24
Term Loans by Origination Year, Before Latest Fiscal Year	24
Total LHFI	24	24
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	111,083	363,970
Term Loans by Origination Year, Before Latest Fiscal Year	290,384	119,926
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	96,128	29,632
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	17,647	4,820
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	4,469	1,016
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	2,965	2,406
Financing Receivable, Revolving Loans	59,472	64,997
Total LHFI	582,148	586,767
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member] | Pass - RR 1 through RR 6 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	108,703	363,824
Term Loans by Origination Year, Before Latest Fiscal Year	289,271	119,727
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	96,128	29,632
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	17,647	3,405
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	3,056	1,016
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	2,923	2,364
Financing Receivable, Revolving Loans	59,432	64,953
Total LHFI	577,160	584,921
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member] | Substandard - RR 8 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	2,380	146
Term Loans by Origination Year, Before Latest Fiscal Year	1,113	199
Term Loans by Origination Year, Three Years Before Latest Fiscal Year		1,415
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	1,413
Financing Receivable, Revolving Loans	40	44
Total LHFI	4,946	1,804
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member] | Doubtful - RR 9 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	42	42
Total LHFI	42	42
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Other Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	6,864	42,726
Term Loans by Origination Year, Before Latest Fiscal Year	40,646	33,441
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	30,994	17,307
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	16,548	9,429
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	8,979	7,018
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	7,850	3,155
Financing Receivable, Revolving Loans	15,139	12,209
Total LHFI	127,020	125,285
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Other Secured by 1-4 Family Residential Properties [Member] | Pass - RR 1 through RR 6 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	6,593	41,996
Term Loans by Origination Year, Before Latest Fiscal Year	40,253	33,346
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	30,862	17,215
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	16,462	9,341
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	8,893	6,798
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	7,370	2,870
Financing Receivable, Revolving Loans	15,077	12,209
Total LHFI	125,510	123,775
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Other Secured by 1-4 Family Residential Properties [Member] | Special Mention - RR 7 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year		29
Term Loans by Origination Year, Before Latest Fiscal Year	29	64
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	62	17
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	15
Total LHFI	106	110
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Other Secured by 1-4 Family Residential Properties [Member] | Substandard - RR 8 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	271	686
Term Loans by Origination Year, Before Latest Fiscal Year	351	31
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	70	75
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	71	88
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	86	220
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	480	285
Financing Receivable, Revolving Loans	62
Total LHFI	1,391	1,385
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Other Secured by 1-4 Family Residential Properties [Member] | Doubtful - RR 9 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year		15
Term Loans by Origination Year, Before Latest Fiscal Year	13
Total LHFI	13	15
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Other Real Estate Secured [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	31,331	293,081
Term Loans by Origination Year, Before Latest Fiscal Year	268,710	156,386
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	185,317	143,423
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	231,465	107,827
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	93,685	11,302
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	25,702	17,694
Financing Receivable, Revolving Loans	11,147	12,642
Total LHFI	847,357	742,355
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Other Real Estate Secured [Member] | Pass - RR 1 through RR 6 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	31,331	293,051
Term Loans by Origination Year, Before Latest Fiscal Year	268,530	156,386
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	184,909	143,114
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	231,161	107,827
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	93,685	11,297
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	25,637	17,626
Financing Receivable, Revolving Loans	11,065	12,516
Total LHFI	846,318	741,817
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Other Real Estate Secured [Member] | Substandard - RR 8 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year		30
Term Loans by Origination Year, Before Latest Fiscal Year	180
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	408	309
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	304
Term Loans by Origination Year, Four Years Before Latest Fiscal Year		5
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	65	68
Financing Receivable, Revolving Loans	82	126
Total LHFI	1,039	538
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	161,663	911,908
Term Loans by Origination Year, Before Latest Fiscal Year	871,623	658,308
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	637,609	612,972
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	664,093	458,416
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	440,340	206,131
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	470,837	300,334
Financing Receivable, Revolving Loans	129,399	130,745
Total LHFI	3,375,564	3,278,814
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Pass - RR 1 through RR 6 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	160,322	889,556
Term Loans by Origination Year, Before Latest Fiscal Year	857,606	657,242
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	635,982	603,515
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	654,501	457,163
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	431,127	205,425
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	459,016	281,828
Financing Receivable, Revolving Loans	128,726	130,052
Total LHFI	3,327,280	3,224,781
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Special Mention - RR 7 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	926	10,284
Term Loans by Origination Year, Three Years Before Latest Fiscal Year		271
Total LHFI	926	10,555
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Substandard - RR 8 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	384	12,034
Term Loans by Origination Year, Before Latest Fiscal Year	14,017	1,066
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	1,627	9,457
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	9,592	905
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	9,140	706
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	11,805	18,488
Financing Receivable, Revolving Loans	673	693
Total LHFI	47,238	43,349
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Doubtful - RR 9 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	31	34
Term Loans by Origination Year, Three Years Before Latest Fiscal Year		77
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	73
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	16	18
Total LHFI	120	129
Commercial LHFI [Member] | Other Loans Secured by Real Estate [Member] | Other Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	98,787	372,981
Term Loans by Origination Year, Before Latest Fiscal Year	387,849	314,524
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	339,433	340,388
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	214,664	833
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	825
Financing Receivable, Revolving Loans		200
Total LHFI	1,041,558	1,028,926
Commercial LHFI [Member] | Other Loans Secured by Real Estate [Member] | Other Construction [Member] | Pass - RR 1 through RR 6 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	98,787	372,981
Term Loans by Origination Year, Before Latest Fiscal Year	387,849	306,904
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	331,813	340,388
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	214,664	833
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	825
Financing Receivable, Revolving Loans		200
Total LHFI	1,033,938	1,021,306
Commercial LHFI [Member] | Other Loans Secured by Real Estate [Member] | Other Construction [Member] | Substandard - RR 8 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Before Latest Fiscal Year		7,620
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	7,620
Total LHFI	7,620	7,620
Consumer LHFI [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	129,632	1,106,630
Term Loans by Origination Year, Before Latest Fiscal Year	1,061,525	635,708
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	614,232	222,935
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	216,118	121,166
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	118,911	89,365
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	355,822	281,553
Financing Receivable, Revolving Loans	465,503	467,483
Total LHFI	2,961,743	2,924,840
Consumer LHFI [Member] | Consumer Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	20,202	72,396
Term Loans by Origination Year, Before Latest Fiscal Year	57,469	26,062
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	21,690	9,699
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	7,570	2,535
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	2,053	1,542
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	1,225	305
Financing Receivable, Revolving Loans	56,255	57,691
Total LHFI	166,464	170,230
Consumer LHFI [Member] | Consumer Loans [Member] | Current [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	19,717	70,858
Term Loans by Origination Year, Before Latest Fiscal Year	56,948	25,771
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	21,458	9,514
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	7,526	2,509
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	2,028	1,513
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	1,216	295
Financing Receivable, Revolving Loans	55,435	56,508
Total LHFI	164,328	166,968
Consumer LHFI [Member] | Consumer Loans [Member] | Past Due 30-89 Days [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	467	1,431
Term Loans by Origination Year, Before Latest Fiscal Year	376	238
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	179	159
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	23	8
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	25	23
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	9	10
Financing Receivable, Revolving Loans	533	946
Total LHFI	1,612	2,815
Consumer LHFI [Member] | Consumer Loans [Member] | Past Due 90 Days or More [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	18	28
Term Loans by Origination Year, Before Latest Fiscal Year	20	12
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	5	7
Term Loans by Origination Year, Three Years Before Latest Fiscal Year		1
Term Loans by Origination Year, Four Years Before Latest Fiscal Year		2
Financing Receivable, Revolving Loans	243	216
Total LHFI	286	266
Consumer LHFI [Member] | Consumer Loans [Member] | Nonaccrual [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year		79
Term Loans by Origination Year, Before Latest Fiscal Year	125	41
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	48	19
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	21	17
Term Loans by Origination Year, Four Years Before Latest Fiscal Year		4
Financing Receivable, Revolving Loans	44	21
Total LHFI	238	181
Consumer LHFI [Member] | Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	5,155	62,049
Term Loans by Origination Year, Before Latest Fiscal Year	65,076	33,075
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	21,981	3,304
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	3,287	1,795
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	1,678	1,694
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	2,889	1,932
Total LHFI	100,066	103,849
Consumer LHFI [Member] | Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member] | Current [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	5,155	62,049
Term Loans by Origination Year, Before Latest Fiscal Year	65,076	32,867
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	21,925	3,304
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	3,287	1,759
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	1,636	1,679
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	2,854	1,915
Total LHFI	99,933	103,573
Consumer LHFI [Member] | Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member] | Past Due 30-89 Days [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Before Latest Fiscal Year		150
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	0
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	0	36
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	7	15
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	28	9
Total LHFI	35	210
Consumer LHFI [Member] | Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member] | Past Due 90 Days or More [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	0
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	0
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	0
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	0
Consumer LHFI [Member] | Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member] | Nonaccrual [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Before Latest Fiscal Year		58
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	56
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	0
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	35
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	7	8
Total LHFI		66	$ 98
Consumer LHFI [Member] | Loans Secured by Real Estate [Member] | Other Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	6,358	25,509
Term Loans by Origination Year, Before Latest Fiscal Year	23,188	8,042
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	7,286	5,408
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	5,277	5,049
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	4,870	3,713
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	12,273	7,992
Financing Receivable, Revolving Loans	409,248	409,792
Total LHFI	468,500	465,505
Consumer LHFI [Member] | Loans Secured by Real Estate [Member] | Other Secured by 1-4 Family Residential Properties [Member] | Current [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	6,358	25,402
Term Loans by Origination Year, Before Latest Fiscal Year	22,887	7,983
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	7,127	5,389
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	5,271	4,894
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	4,798	3,701
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	10,367	7,252
Financing Receivable, Revolving Loans	404,022	403,123
Total LHFI	460,830	457,744
Consumer LHFI [Member] | Loans Secured by Real Estate [Member] | Other Secured by 1-4 Family Residential Properties [Member] | Past Due 30-89 Days [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year		19
Term Loans by Origination Year, Before Latest Fiscal Year	152	35
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	135	15
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	2	134
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	42	5
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	593	286
Financing Receivable, Revolving Loans	2,046	3,197
Total LHFI	2,970	3,691
Consumer LHFI [Member] | Loans Secured by Real Estate [Member] | Other Secured by 1-4 Family Residential Properties [Member] | Past Due 90 Days or More [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Before Latest Fiscal Year	0
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	0
Term Loans by Origination Year, Three Years Before Latest Fiscal Year		1
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	12
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	472
Financing Receivable, Revolving Loans	304	452
Total LHFI	788	453
Consumer LHFI [Member] | Loans Secured by Real Estate [Member] | Other Secured by 1-4 Family Residential Properties [Member] | Nonaccrual [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year		88
Term Loans by Origination Year, Before Latest Fiscal Year	149	24
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	24	4
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	4	20
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	18	7
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	841	454
Financing Receivable, Revolving Loans	2,876	3,020
Total LHFI	3,912	3,617
Consumer LHFI [Member] | Loans Secured by Real Estate [Member] | Other Real Estate Secured [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Two Years Before Latest Fiscal Year		89
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	86
Term Loans by Origination Year, Four Years Before Latest Fiscal Year		5
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	84	89
Total LHFI	170	183
Consumer LHFI [Member] | Loans Secured by Real Estate [Member] | Other Real Estate Secured [Member] | Current [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Two Years Before Latest Fiscal Year		89
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	86
Term Loans by Origination Year, Four Years Before Latest Fiscal Year		5
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	84	89
Total LHFI	170	183
Consumer LHFI [Member] | Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Before Latest Fiscal Year		16
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	15
Total LHFI	15	16
Consumer LHFI [Member] | Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member] | Current [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Before Latest Fiscal Year		16
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	15
Total LHFI	15	16
Consumer LHFI [Member] | Other Loans Secured by Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	97,917	946,676
Term Loans by Origination Year, Before Latest Fiscal Year	915,792	568,513
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	563,260	204,435
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	199,898	111,787
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	110,310	82,411
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	339,351	271,235
Total LHFI	2,226,528	2,185,057
Consumer LHFI [Member] | Other Loans Secured by Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Current [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	97,917	939,511
Term Loans by Origination Year, Before Latest Fiscal Year	908,617	559,804
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	553,441	198,769
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	195,241	109,466
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	107,846	80,249
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	328,376	262,196
Total LHFI	2,191,438	2,149,995
Consumer LHFI [Member] | Other Loans Secured by Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Past Due 30-89 Days [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year		3,967
Term Loans by Origination Year, Before Latest Fiscal Year	2,997	3,752
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	3,303	2,119
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	1,131	425
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	239
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	1,219	1,906
Total LHFI	8,889	12,169
Consumer LHFI [Member] | Other Loans Secured by Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Past Due 90 Days or More [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year		835
Term Loans by Origination Year, Before Latest Fiscal Year	380	777
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	225	272
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	60
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	114	134
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	173	1,100
Total LHFI	952	3,118
Consumer LHFI [Member] | Other Loans Secured by Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member] | Nonaccrual [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year		2,363
Term Loans by Origination Year, Before Latest Fiscal Year	3,798	4,180
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	6,291	3,275
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	3,466	1,896
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	2,111	2,028
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	9,583	6,033
Total LHFI	25,249	$ 19,775
Current Period Gross Charge-offs [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	1,667
Term Loans by Origination Year, Before Latest Fiscal Year	385
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	281
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	90
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	2
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	46
Financing Receivable, Revolving Loans	525
Total LHFI	2,996
Current Period Gross Charge-offs [Member] | Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Before Latest Fiscal Year	204
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	191
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	58
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	11
Financing Receivable, Revolving Loans	7
Total LHFI	471
Current Period Gross Charge-offs [Member] | Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Before Latest Fiscal Year	4
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	10
Total LHFI	14
Current Period Gross Charge-offs [Member] | Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	28
Total LHFI	28
Consumer Borrower Gross Charge-offs [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	1,667
Term Loans by Origination Year, Before Latest Fiscal Year	177
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	80
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	32
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	2
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	7
Financing Receivable, Revolving Loans	518
Total LHFI	2,483
Consumer Borrower Gross Charge-offs [Member] | Consumer Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	1,373
Term Loans by Origination Year, Before Latest Fiscal Year	177
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	75
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	32
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	1
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	1
Financing Receivable, Revolving Loans	496
Total LHFI	2,155
Consumer Borrower Gross Charge-offs [Member] | Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	0
Consumer Borrower Gross Charge-offs [Member] | Loans Secured by Real Estate [Member] | Other Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	0
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	5
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	1
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	6
Financing Receivable, Revolving Loans	22
Total LHFI	34
Consumer Borrower Gross Charge-offs [Member] | Other Loans Secured by Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	294
Total LHFI	294
Commercial Borrower Gross Charge-offs [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Before Latest Fiscal Year	208
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	201
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	58
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	39
Financing Receivable, Revolving Loans	7
Total LHFI	$ 513