v3.21.1

Loans Receivable and the Allowance for Credit Losses - Amortized Cost Basis Based on Delinquency Status (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Recorded Investment, Past Due
Loans current	$ 3,322,501	$ 3,447,188
Loans held for investment, net of unearned income	3,358,161	3,482,223
90 Days or More Past Due And Accruing	508	739
30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	8,355	15,293
60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	541	1,901
90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	26,764	17,841
Agricultural
Financing Receivable, Recorded Investment, Past Due
Loans current	115,252	115,284
Loans held for investment, net of unearned income	117,099	116,392
90 Days or More Past Due And Accruing	0	0
Agricultural | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	513	8
Agricultural | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	106	45
Agricultural | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	1,228	1,055
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due
Loans current	989,633	1,051,727
Loans held for investment, net of unearned income	993,770	1,055,488
90 Days or More Past Due And Accruing	6	106
Commercial and industrial | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	1,042	477
Commercial and industrial | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	124	333
Commercial and industrial | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	2,971	2,951
Commercial real estate
Financing Receivable, Recorded Investment, Past Due
Loans current	1,667,617	1,707,397
Loans held for investment, net of unearned income	1,693,592	1,732,361
90 Days or More Past Due And Accruing	0	0
Commercial real estate | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	4,309	12,326
Commercial real estate | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	164	684
Commercial real estate | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	21,502	11,954
Commercial real estate | Construction & development
Financing Receivable, Recorded Investment, Past Due
Loans current	163,630	180,059
Loans held for investment, net of unearned income	164,927	181,291
90 Days or More Past Due And Accruing	0	0
Commercial real estate | Construction & development | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	693	586
Commercial real estate | Construction & development | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	0	42
Commercial real estate | Construction & development | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	604	604
Commercial real estate | Farmland
Financing Receivable, Recorded Investment, Past Due
Loans current	132,004	138,798
Loans held for investment, net of unearned income	138,199	144,970
90 Days or More Past Due And Accruing	0	0
Commercial real estate | Farmland | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	589	226
Commercial real estate | Farmland | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	164	324
Commercial real estate | Farmland | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	5,442	5,622
Commercial real estate | Multifamily
Financing Receivable, Recorded Investment, Past Due
Loans current	259,564	256,525
Loans held for investment, net of unearned income	261,806	256,525
90 Days or More Past Due And Accruing	0	0
Commercial real estate | Multifamily | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	2,242	0
Commercial real estate | Multifamily | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	0	0
Commercial real estate | Multifamily | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	0	0
Commercial real estate | Commercial real estate-other
Financing Receivable, Recorded Investment, Past Due
Loans current	1,112,419	1,132,015
Loans held for investment, net of unearned income	1,128,660	1,149,575
90 Days or More Past Due And Accruing	0	0
Commercial real estate | Commercial real estate-other | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	785	11,514
Commercial real estate | Commercial real estate-other | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	0	318
Commercial real estate | Commercial real estate-other | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	15,456	5,728
Residential real estate
Financing Receivable, Recorded Investment, Past Due
Loans current	470,865	494,033
Loans held for investment, net of unearned income	474,433	499,106
90 Days or More Past Due And Accruing	502	625
Residential real estate | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	2,397	2,439
Residential real estate | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	141	800
Residential real estate | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	1,030	1,834
Residential real estate | One- to four- family first liens
Financing Receivable, Recorded Investment, Past Due
Loans current	334,061	351,370
Loans held for investment, net of unearned income	337,408	355,684
90 Days or More Past Due And Accruing	468	625
Residential real estate | One- to four- family first liens | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	2,337	2,062
Residential real estate | One- to four- family first liens | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	141	566
Residential real estate | One- to four- family first liens | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	869	1,686
Residential real estate | One- to four- family junior liens
Financing Receivable, Recorded Investment, Past Due
Loans current	136,804	142,663
Loans held for investment, net of unearned income	137,025	143,422
90 Days or More Past Due And Accruing	34	0
Residential real estate | One- to four- family junior liens | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	60	377
Residential real estate | One- to four- family junior liens | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	0	234
Residential real estate | One- to four- family junior liens | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	161	148
Consumer
Financing Receivable, Recorded Investment, Past Due
Loans current	79,134	78,747
Loans held for investment, net of unearned income	79,267	78,876
90 Days or More Past Due And Accruing	0	8
Consumer | 30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	94	43
Consumer | 60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	6	39
Consumer | 90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due
Loans past due	$ 33	$ 47

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