Loans Held for Investment (LHFI) and Allowance for Loan Losses, LHFI - Summary of Amortized Cost Basis of Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	$ 2,605,232	$ 2,729,685
Term Loans by Origination Year, Before Latest Fiscal Year	2,155,115	2,007,251
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	1,600,145	1,283,113
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	806,493	697,511
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	486,898	749,451
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	1,328,593	1,136,893
Financing Receivable, Revolving Loans	1,192,423	1,220,620
Total LHFI	10,174,899	9,824,524
Past Due 90 Days or More [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	21,793	9,552
Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	1,327,211	1,309,078
Commercial and Industrial Loans [Member] | Past Due 90 Days or More [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	3,426	1,543
State and Other Political Subdivision Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	1,125,186	1,000,776
State and Other Political Subdivision Loans [Member] | Past Due 90 Days or More [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	177	177
Other Commercial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	472,679	525,123
Other Commercial Loans [Member] | Past Due 90 Days or More [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	5,091	346
Consumer Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	160,802	164,386
Consumer Loans [Member] | Past Due 90 Days or More [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	273	240
Loans Secured by Real Estate [Member] | Construction, Land Development and Other Land [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	559,804	514,056
Loans Secured by Real Estate [Member] | Other Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	509,195	524,732
Loans Secured by Real Estate [Member] | Other Real Estate Secured [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	986,163	1,065,964
Loans Secured by Real Estate [Member] | Secured by Nonfarm, Nonresidential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	2,924,953	2,709,026
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	1,564	972
Other Loans Secured by Real Estate [Member] | Other Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	726,809	794,983
Other Loans Secured by Real Estate [Member] | Secured by 1-4 Family Residential Properties [Member]
Financing Receivable Recorded Investment [Line Items]
Total LHFI	1,382,097	1,216,400
Commercial LHFI [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	2,016,570	2,304,725
Term Loans by Origination Year, Before Latest Fiscal Year	1,833,633	1,731,911
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	1,424,278	1,072,826
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	669,800	593,152
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	414,669	634,209
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	990,254	791,222
Financing Receivable, Revolving Loans	794,898	814,179
Total LHFI	8,144,102	7,942,224
Commercial LHFI [Member] | Commercial and Industrial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	382,712	457,222
Term Loans by Origination Year, Before Latest Fiscal Year	292,107	167,117
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	101,693	87,348
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	41,483	81,720
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	62,730	61,323
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	46,163	48,242
Financing Receivable, Revolving Loans	400,323	406,106
Total LHFI	1,327,211	1,309,078
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	369,588	444,304
Term Loans by Origination Year, Before Latest Fiscal Year	289,157	165,163
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	82,992	77,611
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	39,484	77,985
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	59,199	59,131
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	43,148	43,214
Financing Receivable, Revolving Loans	379,014	372,486
Total LHFI	1,262,582	1,239,894
Commercial LHFI [Member] | Commercial and Industrial Loans [Member] | Special Mention - RR 7 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	730	677
Term Loans by Origination Year, Before Latest Fiscal Year	385	45
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	180
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	601
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	62
Financing Receivable, Revolving Loans	109	240
Total LHFI	2,067	962
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	12,394	12,090
Term Loans by Origination Year, Before Latest Fiscal Year	2,528	1,814
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	18,486	9,737
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	1,289	3,735
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	3,469	2,160
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	2,992	5,024
Financing Receivable, Revolving Loans	21,200	33,380
Total LHFI	62,358	67,940
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		151
Term Loans by Origination Year, Before Latest Fiscal Year	37	95
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	35
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	109
Term Loans by Origination Year, Four Years Before Latest Fiscal Year		32
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	23	4
Total LHFI	204	282
Commercial LHFI [Member] | State and Other Political Subdivision Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	283,286	250,363
Term Loans by Origination Year, Before Latest Fiscal Year	154,957	79,595
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	84,901	41,334
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	35,182	114,064
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	97,614	132,634
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	457,719	381,340
Financing Receivable, Revolving Loans	11,527	1,446
Total LHFI	1,125,186	1,000,776
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	283,286	250,363
Term Loans by Origination Year, Before Latest Fiscal Year	154,957	79,595
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	84,901	41,334
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	35,182	113,817
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	97,614	132,634
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	450,583	372,831
Financing Receivable, Revolving Loans	11,527	1,446
Total LHFI	1,118,050	992,020
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	3,350	4,018
Total LHFI	3,350	4,018
Commercial LHFI [Member] | State and Other Political Subdivision Loans [Member] | Substandard - RR 8 [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Three Years Before Latest Fiscal Year		247
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	3,786	4,491
Total LHFI	3,786	4,738
Commercial LHFI [Member] | Other Commercial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	71,668	109,113
Term Loans by Origination Year, Before Latest Fiscal Year	50,140	73,089
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	67,480	21,452
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	10,017	9,729
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	8,308	34,188
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	43,846	30,738
Financing Receivable, Revolving Loans	221,220	246,814
Total LHFI	472,679	525,123
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	67,431	101,230
Term Loans by Origination Year, Before Latest Fiscal Year	42,992	70,990
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	65,384	20,769
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	9,646	9,723
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	8,308	33,481
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	43,696	30,715
Financing Receivable, Revolving Loans	197,403	225,533
Total LHFI	434,860	492,441
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	4,167	7,500
Financing Receivable, Revolving Loans	9,013	11,333
Total LHFI	13,180	18,833
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	70	381
Term Loans by Origination Year, Before Latest Fiscal Year	7,098	2,099
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	2,096	683
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	371	6
Term Loans by Origination Year, Four Years Before Latest Fiscal Year		707
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	127
Financing Receivable, Revolving Loans	14,804	9,948
Total LHFI	24,566	13,824
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		2
Term Loans by Origination Year, Before Latest Fiscal Year	50
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	23	23
Total LHFI	73	25
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	284,980	292,637
Term Loans by Origination Year, Before Latest Fiscal Year	116,423	66,441
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	32,966	27,627
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	17,497	4,499
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	1,725	3,768
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	3,387	3,628
Financing Receivable, Revolving Loans	20,890	28,649
Total LHFI	477,868	427,249
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	283,032	287,218
Term Loans by Origination Year, Before Latest Fiscal Year	116,423	62,078
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	29,505	26,401
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	17,454	4,487
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	1,721	3,274
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	3,345	3,564
Financing Receivable, Revolving Loans	20,890	28,548
Total LHFI	472,370	415,570
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	1,948	5,419
Term Loans by Origination Year, Before Latest Fiscal Year		4,363
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	3,461	1,226
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	43	12
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	4	494
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year		22
Financing Receivable, Revolving Loans		101
Total LHFI	5,456	11,637
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	34,041	36,578
Term Loans by Origination Year, Before Latest Fiscal Year	25,754	19,604
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	14,171	16,363
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	11,067	9,946
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	6,686	10,575
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	4,850	5,123
Financing Receivable, Revolving Loans	7,049	12,436
Total LHFI	103,618	110,625
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	33,343	35,139
Term Loans by Origination Year, Before Latest Fiscal Year	25,263	19,596
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	14,164	15,399
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	10,894	9,605
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	6,535	10,273
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	4,208	4,786
Financing Receivable, Revolving Loans	7,049	8,486
Total LHFI	101,456	103,284
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	83	255
Term Loans by Origination Year, Before Latest Fiscal Year	176
Term Loans by Origination Year, Two Years Before Latest Fiscal Year		50
Total LHFI	259	305
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	591	1,155
Term Loans by Origination Year, Before Latest Fiscal Year	315	8
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	7	914
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	173	341
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	151	302
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	642	337
Financing Receivable, Revolving Loans		3,950
Total LHFI	1,879	7,007
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	24	29
Total LHFI	24	29
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	195,305	165,452
Term Loans by Origination Year, Before Latest Fiscal Year	155,769	376,779
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	385,085	347,490
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	154,143	48,626
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	19,297	90,380
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	63,267	24,643
Financing Receivable, Revolving Loans	12,947	12,116
Total LHFI	985,813	1,065,486
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	192,093	146,803
Term Loans by Origination Year, Before Latest Fiscal Year	155,079	376,765
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	385,085	347,472
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	154,131	48,626
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	19,297	89,824
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	62,354	23,680
Financing Receivable, Revolving Loans	12,947	12,116
Total LHFI	980,986	1,045,286
Commercial LHFI [Member] | Loans Secured by Real Estate [Member] | Other Real Estate Secured [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	791	841
Total LHFI	791	841
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	3,212	18,649
Term Loans by Origination Year, Before Latest Fiscal Year	690	14
Term Loans by Origination Year, Two Years Before Latest Fiscal Year		18
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	12
Term Loans by Origination Year, Four Years Before Latest Fiscal Year		556
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	122	122
Total LHFI	4,036	19,359
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	539,658	730,062
Term Loans by Origination Year, Before Latest Fiscal Year	667,214	523,350
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	634,416	449,736
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	387,574	310,494
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	218,309	298,877
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	371,022	297,508
Financing Receivable, Revolving Loans	106,725	98,877
Total LHFI	2,924,918	2,708,904
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	530,254	697,439
Term Loans by Origination Year, Before Latest Fiscal Year	655,169	496,476
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	609,318	442,264
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	383,231	293,072
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	214,750	254,747
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	311,903	251,219
Financing Receivable, Revolving Loans	105,190	96,098
Total LHFI	2,809,815	2,531,315
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	325	13,452
Term Loans by Origination Year, Before Latest Fiscal Year	9,655	6,139
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	416	2,956
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	596	4,466
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	1,602	4,957
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	4,839	20,545
Total LHFI	17,433	52,515
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	9,034	19,119
Term Loans by Origination Year, Before Latest Fiscal Year	2,390	20,572
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	24,568	4,516
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	3,747	12,956
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	1,957	38,956
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	54,258	25,438
Financing Receivable, Revolving Loans	1,535	2,779
Total LHFI	97,489	124,336
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	45	52
Term Loans by Origination Year, Before Latest Fiscal Year		163
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	114
Term Loans by Origination Year, Four Years Before Latest Fiscal Year		217
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	22	306
Total LHFI	181	738
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	224,920	263,298
Term Loans by Origination Year, Before Latest Fiscal Year	371,269	425,936
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	103,566	81,476
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	12,837	14,074
Term Loans by Origination Year, Four Years Before Latest Fiscal Year		2,464
Financing Receivable, Revolving Loans	14,217	7,735
Total LHFI	726,809	794,983
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	223,507	262,544
Term Loans by Origination Year, Before Latest Fiscal Year	371,269	425,936
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	103,566	81,476
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	12,837	14,074
Term Loans by Origination Year, Four Years Before Latest Fiscal Year		2,464
Financing Receivable, Revolving Loans	14,217	7,735
Total LHFI	725,396	794,229
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, Current Fiscal Year	1,413	754
Total LHFI	1,413	754
Consumer LHFI [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	588,662	424,960
Term Loans by Origination Year, Before Latest Fiscal Year	321,482	275,340
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	175,867	210,287
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	136,693	104,359
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	72,229	115,242
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	338,339	345,671
Financing Receivable, Revolving Loans	397,525	406,441
Total LHFI	2,030,797	1,882,300
Consumer LHFI [Member] | Consumer Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	54,072	65,983
Term Loans by Origination Year, Before Latest Fiscal Year	33,499	25,465
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	11,528	13,266
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	6,308	3,925
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	1,712	1,266
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	653	348
Financing Receivable, Revolving Loans	53,030	54,133
Total LHFI	160,802	164,386
Consumer LHFI [Member] | Consumer Loans [Member] | Current [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	53,613	65,370
Term Loans by Origination Year, Before Latest Fiscal Year	33,221	25,303
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	11,432	13,140
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	6,256	3,893
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	1,677	1,257
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	653	345
Financing Receivable, Revolving Loans	52,231	53,669
Total LHFI	159,083	162,977
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	412	524
Term Loans by Origination Year, Before Latest Fiscal Year	231	158
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	91	67
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	26	19
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	26	7
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year		3
Financing Receivable, Revolving Loans	600	305
Total LHFI	1,386	1,083
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	36	77
Term Loans by Origination Year, Before Latest Fiscal Year	33
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	3	4
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	9
Financing Receivable, Revolving Loans	192	159
Total LHFI	273	240
Consumer LHFI [Member] | Consumer Loans [Member] | Nonaccrual [Member]
Financing Receivable Recorded Investment [Line Items]
Term Loans by Origination Year, Current Fiscal Year	11	12
Term Loans by Origination Year, Before Latest Fiscal Year	14	4
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	2	55
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	17	13
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	9	2
Financing Receivable, Revolving Loans	7
Total LHFI	60	86
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	37,059	47,336
Term Loans by Origination Year, Before Latest Fiscal Year	29,876	24,492
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	7,958	8,516
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	3,244	2,036
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	897	1,448
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	2,902	2,979
Total LHFI	81,936	86,807
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	37,059	47,336
Term Loans by Origination Year, Before Latest Fiscal Year	29,173	24,174
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	7,958	8,496
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	3,212	2,036
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	897	1,447
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	2,701	2,868
Total LHFI	81,000	86,357
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	703	318
Term Loans by Origination Year, Two Years Before Latest Fiscal Year		20
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	11	12
Total LHFI	746	351
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, Five or More Years Before Latest Fiscal Year	190	99
Total LHFI	190	99
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	21,352	20,963
Term Loans by Origination Year, Before Latest Fiscal Year	12,432	10,309
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	6,933	12,158
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	6,930	4,618
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	3,801	2,082
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	9,634	11,669
Financing Receivable, Revolving Loans	344,495	352,308
Total LHFI	405,577	414,107
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	21,308	20,864
Term Loans by Origination Year, Before Latest Fiscal Year	12,368	10,253
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	6,727	12,037
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	6,913	4,177
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	3,388	2,082
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	8,768	11,124
Financing Receivable, Revolving Loans	341,019	348,830
Total LHFI	400,491	409,367
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	32	93
Term Loans by Origination Year, Before Latest Fiscal Year	8	12
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	193
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	7	13
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	66
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	371	133
Financing Receivable, Revolving Loans	1,531	1,058
Total LHFI	2,208	1,309
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, Five or More Years Before Latest Fiscal Year	123	30
Financing Receivable, Revolving Loans	31	22
Total LHFI	154	52
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	12	6
Term Loans by Origination Year, Before Latest Fiscal Year	56	44
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	13	121
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	10	428
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	347
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	372	382
Financing Receivable, Revolving Loans	1,914	2,398
Total LHFI	2,724	3,379
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, Current Fiscal Year		107
Term Loans by Origination Year, Before Latest Fiscal Year	100
Term Loans by Origination Year, Two Years Before Latest Fiscal Year		38
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	8	37
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	33	96
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	209	200
Total LHFI	350	478
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, Current Fiscal Year		107
Term Loans by Origination Year, Before Latest Fiscal Year	100
Term Loans by Origination Year, Two Years Before Latest Fiscal Year		38
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	8	37
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	33	96
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	209	200
Total LHFI	350	478
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, Current Fiscal Year	33	109
Term Loans by Origination Year, Three Years Before Latest Fiscal Year		4
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		9
Total LHFI	35	122
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, Current Fiscal Year	33	109
Term Loans by Origination Year, Three Years Before Latest Fiscal Year		4
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		9
Total LHFI	35	122
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	476,146	290,462
Term Loans by Origination Year, Before Latest Fiscal Year	245,575	215,074
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	149,448	176,309
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	120,203	93,739
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	65,784	110,350
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	324,941	330,466
Total LHFI	1,382,097	1,216,400
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	475,651	289,521
Term Loans by Origination Year, Before Latest Fiscal Year	243,852	214,056
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	147,846	173,324
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	117,312	92,564
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	64,973	109,031
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	317,231	321,250
Total LHFI	1,366,865	1,199,746
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	316	499
Term Loans by Origination Year, Before Latest Fiscal Year	600	93
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	330	753
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	351	366
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	164	1,080
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	711	799
Total LHFI	2,472	3,590
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	5	159
Term Loans by Origination Year, Before Latest Fiscal Year		214
Term Loans by Origination Year, Two Years Before Latest Fiscal Year		208
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	11	127
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	182	549
Total LHFI	198	1,257
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	174	283
Term Loans by Origination Year, Before Latest Fiscal Year	1,123	711
Term Loans by Origination Year, Two Years Before Latest Fiscal Year	1,272	2,024
Term Loans by Origination Year, Three Years Before Latest Fiscal Year	2,529	682
Term Loans by Origination Year, Four Years Before Latest Fiscal Year	647	239
Term Loans by Origination Year, Five or More Years Before Latest Fiscal Year	6,817	7,868
Total LHFI	$ 12,562	$ 11,807