Loans - Summary of Loans By type, Risk Rating, and Origination Year According to our Internal Risk Ratings (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
2023	$ 45,961
2022	154,903
2021	276,274
2020	101,479
2019	68,166
Prior	192,778
Revolving Loans Amortized Cost Basis	120,560
Revolving Loans Converted to Term Loans	0
Total Loans	960,121	$ 980,178
Total commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans	52,927	57,902
Total commercial and industrial | Commercial and business loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023	3,046
2022	4,856
2021	1,343
2020	958
2019	16
Prior	1,132
Revolving Loans Amortized Cost Basis	41,449
Revolving Loans Converted to Term Loans	0
Total Loans	52,800	57,770
Total commercial and industrial | Commercial and business loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	3,046
2022	4,856
2021	1,343
2020	958
2019	16
Prior	1,132
Revolving Loans Amortized Cost Basis	41,448
Revolving Loans Converted to Term Loans	0
Total Loans	52,799
Total commercial and industrial | Commercial and business loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	1
Revolving Loans Converted to Term Loans	0
Total Loans	1
Total commercial and industrial | Commercial and business loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	0
Total commercial and industrial | Commercial and business loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	0
Total commercial and industrial | Government program loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	6
2019	0
Prior	121
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	127	132
Total commercial and industrial | Government program loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	6
2019	0
Prior	121
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	127
Total commercial and industrial | Government program loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	0
Total commercial and industrial | Government program loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	0
Total commercial and industrial | Government program loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	0
Total real estate mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans	669,117	671,521
Total real estate mortgage | Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
2023	26,005
2022	102,723
2021	36,314
2020	64,721
2019	61,557
Prior	110,099
Revolving Loans Amortized Cost Basis	1,797
Revolving Loans Converted to Term Loans	0
Total Loans	403,216	398,115
Total real estate mortgage | Commercial real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	26,005
2022	102,723
2021	36,314
2020	59,724
2019	53,770
Prior	110,099
Revolving Loans Amortized Cost Basis	1,797
Revolving Loans Converted to Term Loans	0
Total Loans	390,432
Total real estate mortgage | Commercial real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	4,997
2019	7,787
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	12,784
Total real estate mortgage | Commercial real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	0
Total real estate mortgage | Commercial real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	0
Total real estate mortgage | Residential mortgages
Financing Receivable, Credit Quality Indicator [Line Items]
2023	1,995
2022	26,999
2021	216,327
2020	4,237
2019	4,193
Prior	12,107
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	265,858	273,357
Total real estate mortgage | Residential mortgages | Not graded
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	25,074
2021	210,862
2020	2,335
2019	0
Prior	10,300
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	248,571
Total real estate mortgage | Residential mortgages | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	1,995
2022	1,925
2021	5,465
2020	1,902
2019	4,193
Prior	1,807
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	17,287
Total real estate mortgage | Residential mortgages | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	0
Total real estate mortgage | Residential mortgages | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	0
Total real estate mortgage | Residential mortgages | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	0
Total real estate mortgage | Home improvement and home equity loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	43
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	43	49
Total real estate mortgage | Home improvement and home equity loans | Not graded
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	37
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	37
Total real estate mortgage | Home improvement and home equity loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	6
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	6
Total real estate mortgage | Home improvement and home equity loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	0
Total real estate mortgage | Home improvement and home equity loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	0
Total real estate mortgage | Home improvement and home equity loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	0
Real estate construction and development loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023	12,960
2022	13,364
2021	21,632
2020	27,847
2019	180
Prior	14,792
Revolving Loans Amortized Cost Basis	44,525
Revolving Loans Converted to Term Loans	0
Total Loans	135,300	153,374
Real estate construction and development loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	12,960
2022	13,364
2021	21,632
2020	24,323
2019	180
Prior	5,174
Revolving Loans Amortized Cost Basis	44,525
Revolving Loans Converted to Term Loans	0
Total Loans	122,158
Real estate construction and development loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	0
Real estate construction and development loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	3,524
2019	0
Prior	9,618
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	13,142
Real estate construction and development loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	0
Agricultural
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	6,651
2021	465
2020	3,548
2019	1,691
Prior	13,259
Revolving Loans Amortized Cost Basis	32,052
Revolving Loans Converted to Term Loans	0
Total Loans	57,666	52,722
Agricultural | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	6,651
2021	465
2020	3,035
2019	1,691
Prior	12,830
Revolving Loans Amortized Cost Basis	31,662
Revolving Loans Converted to Term Loans	0
Total Loans	56,334
Agricultural | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	513
2019	0
Prior	356
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	869
Agricultural | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	73
Revolving Loans Amortized Cost Basis	390
Revolving Loans Converted to Term Loans	0
Total Loans	463
Agricultural | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	0
Installment and student loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023	1,955
2022	310
2021	193
2020	162
2019	529
Prior	41,225
Revolving Loans Amortized Cost Basis	737
Revolving Loans Converted to Term Loans	0
Total Loans	45,111	$ 44,659
Installment and student loans | Not graded
Financing Receivable, Credit Quality Indicator [Line Items]
2023	667
2022	310
2021	193
2020	162
2019	529
Prior	41,225
Revolving Loans Amortized Cost Basis	736
Revolving Loans Converted to Term Loans	0
Total Loans	43,822
Installment and student loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	1,288
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	1,288
Installment and student loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	0
Installment and student loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	1
Revolving Loans Converted to Term Loans	0
Total Loans	1
Installment and student loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term Loans	0
Total Loans	$ 0