Loans Receivable and the Allowance for Credit Losses - Schedule of Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
2023	$ 674,051	$ 1,067,422
2022	1,048,803	947,999
2021	822,694	711,994
2020	591,609	214,726
2019	175,599	123,339
Prior	389,563	348,634
Revolving Loans	424,628	426,410
Loans held for investment, net of unearned income	4,126,947	3,840,524
Year-to-date Current Period Gross Write-offs
2023	239
2022	991
2021	254
2020	162
2019	478
Prior	2,428
Revolving Loans	0
Total	4,552	7,656	$ 2,332
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
2023	49,579	69,880
2022	44,238	41,887
2021	28,775	16,872
2020	11,713	6,547
2019	4,041	5,403
Prior	15,217	12,971
Revolving Loans	93,955	84,053
Loans held for investment, net of unearned income	247,518	237,613
Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	214	25
2021	0	47
2020	25	188
2019	26	760
Prior	639	81
Revolving Loans	0	100
Loans held for investment, net of unearned income	904	1,201
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	607,768	975,687
2022	962,918	883,225
2021	752,137	649,601
2020	524,570	179,713
2019	139,536	93,541
Prior	311,683	295,220
Revolving Loans	299,882	321,166
Loans held for investment, net of unearned income	3,598,494	3,398,153
Special mention / watch
Financing Receivable, Credit Quality Indicator [Line Items]
2023	11,444	19,895
2022	11,123	11,324
2021	10,365	22,534
2020	33,885	12,913
2019	14,157	10,742
Prior	9,059	12,491
Revolving Loans	22,996	18,165
Loans held for investment, net of unearned income	113,029	108,064
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	5,260	1,960
2022	30,310	11,538
2021	31,417	22,940
2020	21,416	15,365
2019	17,839	12,893
Prior	52,965	27,871
Revolving Loans	7,795	2,926
Loans held for investment, net of unearned income	167,002	95,493
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans	0	0
Loans held for investment, net of unearned income	0	0
Agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
2023	12,834	20,470
2022	12,892	14,169
2021	9,324	5,879
2020	3,051	2,923
2019	694	946
Prior	1,885	1,969
Revolving Loans	77,734	68,964
Loans held for investment, net of unearned income	118,414	115,320
Year-to-date Current Period Gross Write-offs
2023	0
2022	8
2021	1
2020	17
2019	2
Prior	0
Revolving Loans	0
Total	28	326	170
Agricultural | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	11,859	20,279
2022	12,149	12,511
2021	8,352	5,398
2020	2,752	2,883
2019	689	939
Prior	1,139	1,063
Revolving Loans	71,680	65,395
Loans held for investment, net of unearned income	108,620	108,468
Agricultural | Special mention / watch
Financing Receivable, Credit Quality Indicator [Line Items]
2023	266	143
2022	550	1,012
2021	670	115
2020	91	36
2019	5
Prior	522	604
Revolving Loans	3,705	1,655
Loans held for investment, net of unearned income	5,809	3,565
Agricultural | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	709	48
2022	193	646
2021	302	366
2020	208	4
2019		7
Prior	224	302
Revolving Loans	2,349	1,914
Loans held for investment, net of unearned income	3,985	3,287
Agricultural | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans	0	0
Loans held for investment, net of unearned income	0	0
Commercial and Industrial
Financing Receivable, Credit Quality Indicator [Line Items]
2023	179,459	267,031
2022	228,261	236,003
2021	198,230	158,204
2020	121,272	49,547
2019	34,255	31,535
Prior	146,365	136,326
Revolving Loans	167,161	176,516
Loans held for investment, net of unearned income	1,075,003	1,055,162
Year-to-date Current Period Gross Write-offs
2023	239
2022	343
2021	223
2020	133
2019	464
Prior	45
Revolving Loans	0
Total	1,447	2,051	1,015
Commercial and Industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	176,021	262,500
2022	224,924	232,263
2021	193,011	151,567
2020	117,326	48,199
2019	25,555	27,680
Prior	116,661	115,877
Revolving Loans	147,690	163,205
Loans held for investment, net of unearned income	1,001,188	1,001,291
Commercial and Industrial | Special mention / watch
Financing Receivable, Credit Quality Indicator [Line Items]
2023	2,541	3,975
2022	416	3,574
2021	3,209	5,465
2020	3,385	592
2019	193	3,299
Prior	272	1,864
Revolving Loans	14,692	12,299
Loans held for investment, net of unearned income	24,708	31,068
Commercial and Industrial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	897	556
2022	2,921	166
2021	2,010	1,172
2020	561	756
2019	8,507	556
Prior	29,432	18,585
Revolving Loans	4,779	1,012
Loans held for investment, net of unearned income	49,107	22,803
Commercial and Industrial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans	0	0
Loans held for investment, net of unearned income	0	0
Commercial Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment, net of unearned income	2,225,310	1,980,018
Year-to-date Current Period Gross Write-offs
Total	2,337	4,328	602
Commercial Real Estate | Construction & development
Financing Receivable, Credit Quality Indicator [Line Items]
2023	101,243	146,665
2022	163,366	74,331
2021	43,653	19,324
2020	3,393	989
2019	821	1,058
Prior	700	555
Revolving Loans	10,019	28,069
Loans held for investment, net of unearned income	323,195	270,991
Year-to-date Current Period Gross Write-offs
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans	0
Total	0
Commercial Real Estate | Farmland
Financing Receivable, Credit Quality Indicator [Line Items]
2023	28,725	58,457
2022	52,015	57,005
2021	51,019	31,406
2020	25,897	8,402
2019	7,513	10,090
Prior	17,839	14,914
Revolving Loans	1,947	3,639
Loans held for investment, net of unearned income	184,955	183,913
Year-to-date Current Period Gross Write-offs
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans	0
Total	0
Commercial Real Estate | Multifamily
Financing Receivable, Credit Quality Indicator [Line Items]
2023	37,395	32,018
2022	98,206	101,632
2021	118,881	86,474
2020	96,843	17,137
2019	16,551	8,480
Prior	11,094	6,339
Revolving Loans	4,208	49
Loans held for investment, net of unearned income	383,178	252,129
Year-to-date Current Period Gross Write-offs
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans	0
Total	0
Commercial Real Estate | Commercial real estate-other
Financing Receivable, Credit Quality Indicator [Line Items]
2023	200,387	332,363
2022	322,927	318,364
2021	279,271	329,315
2020	274,602	103,067
2019	90,033	42,375
Prior	110,441	93,919
Revolving Loans	56,321	53,582
Loans held for investment, net of unearned income	1,333,982	1,272,985
Year-to-date Current Period Gross Write-offs
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	2,337
Revolving Loans	0
Total	2,337
Commercial Real Estate | One- to four- family first liens
Financing Receivable, Credit Quality Indicator [Line Items]
2023	64,429
2022	126,684
2021	93,541
2020	54,813
2019	21,665
Prior	85,383
Revolving Loans	13,283
Loans held for investment, net of unearned income	459,798
Commercial Real Estate | Pass | Construction & development
Financing Receivable, Credit Quality Indicator [Line Items]
2023	99,803	144,597
2022	163,126	73,832
2021	43,189	19,324
2020	3,393	989
2019	821	1,058
Prior	700	549
Revolving Loans	9,552	28,069
Loans held for investment, net of unearned income	320,584	268,418
Commercial Real Estate | Pass | Farmland
Financing Receivable, Credit Quality Indicator [Line Items]
2023	25,666	55,251
2022	44,907	52,802
2021	47,068	28,744
2020	18,863	7,266
2019	6,587	8,406
Prior	14,845	12,895
Revolving Loans	1,642	1,946
Loans held for investment, net of unearned income	159,578	167,310
Commercial Real Estate | Pass | Multifamily
Financing Receivable, Credit Quality Indicator [Line Items]
2023	32,077	31,018
2022	96,969	93,907
2021	111,032	84,573
2020	77,532	17,137
2019	8,701	2,549
Prior	6,508	5,161
Revolving Loans	4,208	49
Loans held for investment, net of unearned income	337,027	234,394
Commercial Real Estate | Pass | Commercial real estate-other
Financing Receivable, Credit Quality Indicator [Line Items]
2023	199,698	322,753
2022	295,066	314,376
2021	256,718	296,368
2020	250,676	79,408
2019	77,509	31,041
Prior	90,170	81,708
Revolving Loans	51,827	51,064
Loans held for investment, net of unearned income	1,221,664	1,176,718
Commercial Real Estate | Pass | One- to four- family first liens
Financing Receivable, Credit Quality Indicator [Line Items]
2023	62,644
2022	125,777
2021	92,767
2020	54,028
2019	19,674
Prior	81,660
Revolving Loans	13,283
Loans held for investment, net of unearned income	449,833
Commercial Real Estate | Special mention / watch | Construction & development
Financing Receivable, Credit Quality Indicator [Line Items]
2023	1,097	1,787
2022	0	499
2021	464	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans	467	0
Loans held for investment, net of unearned income	2,028	2,286
Commercial Real Estate | Special mention / watch | Farmland
Financing Receivable, Credit Quality Indicator [Line Items]
2023	1,229	3,058
2022	6,898	2,229
2021	2,409	1,470
2020	5,982	0
2019	0	225
Prior	965	21
Revolving Loans	276	1,693
Loans held for investment, net of unearned income	17,759	8,696
Commercial Real Estate | Special mention / watch | Multifamily
Financing Receivable, Credit Quality Indicator [Line Items]
2023	5,318	1,000
2022	1,237	0
2021	277	1,567
2020	18,984	0
2019	7,850	5,931
Prior	4,586	1,178
Revolving Loans	0	0
Loans held for investment, net of unearned income	38,252	9,676
Commercial Real Estate | Special mention / watch | Commercial real estate-other
Financing Receivable, Credit Quality Indicator [Line Items]
2023	364	8,858
2022	1,306	3,399
2021	3,300	13,245
2020	4,823	10,365
2019	4,282	1,137
Prior	2,395	8,122
Revolving Loans	3,856	2,518
Loans held for investment, net of unearned income	20,326	47,644
Commercial Real Estate | Special mention / watch | One- to four- family first liens
Financing Receivable, Credit Quality Indicator [Line Items]
2023	629
2022	716
2021	36
2020	620
2019	1,827
Prior	319
Revolving Loans	0
Loans held for investment, net of unearned income	4,147
Commercial Real Estate | Substandard | Construction & development
Financing Receivable, Credit Quality Indicator [Line Items]
2023	343	281
2022	240	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	6
Revolving Loans	0	0
Loans held for investment, net of unearned income	583	287
Commercial Real Estate | Substandard | Farmland
Financing Receivable, Credit Quality Indicator [Line Items]
2023	1,830	148
2022	210	1,974
2021	1,542	1,192
2020	1,052	1,136
2019	926	1,459
Prior	2,029	1,998
Revolving Loans	29	0
Loans held for investment, net of unearned income	7,618	7,907
Commercial Real Estate | Substandard | Multifamily
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	7,725
2021	7,572	334
2020	327	0
2019	0	0
Prior	0	0
Revolving Loans	0	0
Loans held for investment, net of unearned income	7,899	8,059
Commercial Real Estate | Substandard | Commercial real estate-other
Financing Receivable, Credit Quality Indicator [Line Items]
2023	325	752
2022	26,555	589
2021	19,253	19,702
2020	19,103	13,294
2019	8,242	10,197
Prior	17,876	4,089
Revolving Loans	638	0
Loans held for investment, net of unearned income	91,992	48,623
Commercial Real Estate | Substandard | One- to four- family first liens
Financing Receivable, Credit Quality Indicator [Line Items]
2023	1,156
2022	191
2021	738
2020	165
2019	164
Prior	3,404
Revolving Loans	0
Loans held for investment, net of unearned income	5,818
Commercial Real Estate | Doubtful | Construction & development
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans	0	0
Loans held for investment, net of unearned income	0	0
Commercial Real Estate | Doubtful | Farmland
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans	0	0
Loans held for investment, net of unearned income	0	0
Commercial Real Estate | Doubtful | Multifamily
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans	0	0
Loans held for investment, net of unearned income	0	0
Commercial Real Estate | Doubtful | Commercial real estate-other
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans	0	0
Loans held for investment, net of unearned income	0	0
Commercial Real Estate | Doubtful | One- to four- family first liens
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans	0
Loans held for investment, net of unearned income	0
Residential Real Estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment, net of unearned income	640,437	614,428
Year-to-date Current Period Gross Write-offs
Total	55	195	107
Residential Real Estate | One- to four- family first liens
Financing Receivable, Credit Quality Indicator [Line Items]
2023		140,538
2022		104,583
2021		64,473
2020		25,926
2019		22,692
Prior		81,560
Revolving Loans		11,438
Loans held for investment, net of unearned income	459,798	451,210
Year-to-date Current Period Gross Write-offs
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	36
Revolving Loans	0
Total	36
Residential Real Estate | One- to four- family junior liens
Financing Receivable, Credit Quality Indicator [Line Items]
2023	23,551	37,296
2022	30,111	22,931
2021	18,733	8,937
2020	7,317	3,237
2019	2,613	4,513
Prior	8,504	6,406
Revolving Loans	89,810	79,898
Loans held for investment, net of unearned income	180,639	163,218
Year-to-date Current Period Gross Write-offs
2023	0
2022	19
2021	0
2020	0
2019	0
Prior	0
Revolving Loans	0
Total	19
Residential Real Estate | One- to four- family junior liens | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
2023	23,551	37,296
2022	29,919	22,908
2021	18,733	8,906
2020	7,292	3,058
2019	2,590	3,757
Prior	7,867	6,330
Revolving Loans	89,810	79,798
Loans held for investment, net of unearned income	179,762	162,053
Residential Real Estate | One- to four- family junior liens | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	192	23
2021	0	31
2020	25	179
2019	23	756
Prior	637	76
Revolving Loans	0	100
Loans held for investment, net of unearned income	877	1,165
Residential Real Estate | Pass | One- to four- family first liens
Financing Receivable, Credit Quality Indicator [Line Items]
2023		139,289
2022		103,534
2021		63,627
2020		23,831
2019		21,868
Prior		77,967
Revolving Loans		11,438
Loans held for investment, net of unearned income		441,554
Residential Real Estate | Special mention / watch | One- to four- family first liens
Financing Receivable, Credit Quality Indicator [Line Items]
2023		1,074
2022		611
2021		672
2020		1,920
2019		150
Prior		702
Revolving Loans		0
Loans held for investment, net of unearned income		5,129
Residential Real Estate | Substandard | One- to four- family first liens
Financing Receivable, Credit Quality Indicator [Line Items]
2023		175
2022		438
2021		174
2020		175
2019		674
Prior		2,891
Revolving Loans		0
Loans held for investment, net of unearned income		4,527
Residential Real Estate | Doubtful | One- to four- family first liens
Financing Receivable, Credit Quality Indicator [Line Items]
2023		0
2022		0
2021		0
2020		0
2019		0
Prior		0
Revolving Loans		0
Loans held for investment, net of unearned income		0
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2023	26,028	32,584
2022	14,341	18,981
2021	10,042	7,982
2020	4,421	3,498
2019	1,454	1,650
Prior	7,352	6,646
Revolving Loans	4,145	4,255
Loans held for investment, net of unearned income	67,783	75,596
Year-to-date Current Period Gross Write-offs
2023	0
2022	621
2021	30
2020	12
2019	12
Prior	10
Revolving Loans
Total	685	756	$ 438
Consumer | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
2023	26,028	32,584
2022	14,319	18,979
2021	10,042	7,966
2020	4,421	3,489
2019	1,451	1,646
Prior	7,350	6,641
Revolving Loans	4,145	4,255
Loans held for investment, net of unearned income	67,756	75,560
Consumer | Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	22	2
2021	0	16
2020	0	9
2019	3	4
Prior	2	5
Revolving Loans	0	0
Loans held for investment, net of unearned income	$ 27	$ 36