Loans Receivable and the Allowance for Credit Losses - Schedule of Primary Type of Collateral (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	$ 4,075,447	$ 3,791,324
ACL Allocation	51,500	49,200	$ 48,700	$ 55,500
Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	613	923	667	1,346
Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	21,743	22,855	17,294	15,689
Commercial Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	23,759	20,123	26,120	32,640
Residential Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	4,762	4,678	4,010	4,882
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
ACL Allocation	623	621	$ 609	$ 943
Real Estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	27,236	17,374
Real Estate | Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	11	68
Real Estate | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	15,991	856
Real Estate | Commercial Real Estate | Construction & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
Real Estate | Commercial Real Estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	5,403	4,515
Real Estate | Commercial Real Estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
Real Estate | Commercial Real Estate | Commercial real estate-other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	5,350	11,006
Real Estate | Residential Real Estate | One- to four- family first liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	481	929
Real Estate | Residential Real Estate | One- to four- family junior liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
Real Estate | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
Equipment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	3,199
Equipment | Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	2,463
Equipment | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	736
Equipment | Commercial Real Estate | Construction & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
Equipment | Commercial Real Estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
Equipment | Commercial Real Estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
Equipment | Commercial Real Estate | Commercial real estate-other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
Equipment | Residential Real Estate | One- to four- family first liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
Equipment | Residential Real Estate | One- to four- family junior liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
Equipment | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	1,921	1,560
Other | Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
Other | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	1,240	592
Other | Commercial Real Estate | Construction & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
Other | Commercial Real Estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
Other | Commercial Real Estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
Other | Commercial Real Estate | Commercial real estate-other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	179	247
Other | Residential Real Estate | One- to four- family first liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
Other | Residential Real Estate | One- to four- family junior liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	502	721
Other | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
Collateral Pledged
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	29,157	22,133
ACL Allocation	3,337	1,985
Collateral Pledged | Agricultural
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	11	2,531
ACL Allocation	0	500
Collateral Pledged | Commercial and Industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	17,231	2,184
ACL Allocation	2,616	600
Collateral Pledged | Commercial Real Estate | Construction & development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
ACL Allocation	0	0
Collateral Pledged | Commercial Real Estate | Farmland
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	5,403	4,515
ACL Allocation	0	0
Collateral Pledged | Commercial Real Estate | Multifamily
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
ACL Allocation	0	0
Collateral Pledged | Commercial Real Estate | Commercial real estate-other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	5,529	11,253
ACL Allocation	705	705
Collateral Pledged | Residential Real Estate | One- to four- family first liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	481	929
ACL Allocation	0	0
Collateral Pledged | Residential Real Estate | One- to four- family junior liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	502	721
ACL Allocation	16	180
Collateral Pledged | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for investment, net	0	0
ACL Allocation	$ 0	$ 0