Loans - Loan Balances Based on Year of Origination (Details) $ in Thousands	Jun. 30, 2023 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
Gross charge-offs - fiscal year 2023	$ 109
Gross charge-offs - fiscal year 2022	24
Gross charge-offs - fiscal year 2021	20
Gross charge-offs - fiscal year 2020	29
Gross charge-offs - Term Total	182
Gross charge-offs - Grand Total	182
Consumer Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	40,806
2022	99,239
2021	96,360
2020	86,022
Prior	137,064
Term Total	459,491
Revolving Loans Amortized Cost Basis	47,351
Grand Total	506,842
Consumer Real Estate [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	40,806
2022	99,239
2021	95,955
2020	86,022
Prior	135,764
Term Total	457,786
Revolving Loans Amortized Cost Basis	47,333
Grand Total	505,119
Consumer Real Estate [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Prior	543
Term Total	543
Grand Total	543
Consumer Real Estate [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2021	405
Prior	757
Term Total	1,162
Revolving Loans Amortized Cost Basis	18
Grand Total	1,180
Agricultural Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	21,557
2022	40,606
2021	38,592
2020	26,961
Prior	102,718
Term Total	230,434
Revolving Loans Amortized Cost Basis	97
Grand Total	230,531
Agricultural Real Estate [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	21,557
2022	40,186
2021	25,457
2020	26,773
Prior	90,134
Term Total	204,107
Revolving Loans Amortized Cost Basis	97
Grand Total	204,204
Agricultural Real Estate [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	171
2021	13,135
Prior	5,776
Term Total	19,082
Grand Total	19,082
Agricultural Real Estate [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	249
2020	188
Prior	6,808
Term Total	7,245
Grand Total	7,245
Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	15,332
2022	26,094
2021	12,225
2020	6,271
Prior	6,645
Term Total	66,567
Revolving Loans Amortized Cost Basis	62,026
Grand Total	128,593
Agricultural [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	14,815
2022	25,059
2021	10,432
2020	5,167
Prior	6,645
Term Total	62,118
Revolving Loans Amortized Cost Basis	59,778
Grand Total	121,896
Agricultural [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	517
2022	1,035
2021	1,793
2020	1,026
Term Total	4,371
Revolving Loans Amortized Cost Basis	2,248
Grand Total	6,619
Agricultural [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	78
Term Total	78
Grand Total	78
Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	167,548
2022	440,265
2021	256,817
2020	141,362
Prior	272,453
Term Total	1,278,445
Grand Total	1,278,445
Commercial Real Estate [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	166,430
2022	440,265
2021	256,817
2020	130,716
Prior	259,203
Term Total	1,253,431
Grand Total	1,253,431
Commercial Real Estate [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	10,571
Prior	1,283
Term Total	11,854
Grand Total	11,854
Commercial Real Estate [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	1,118
2020	75
Prior	11,967
Term Total	13,160
Grand Total	13,160
Commercial & Industrial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	40,504
2022	58,879
2021	31,072
2020	28,451
Prior	6,565
Term Total	165,471
Revolving Loans Amortized Cost Basis	87,771
Grand Total	253,242
Commercial & Industrial [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	40,307
2022	58,399
2021	30,851
2020	27,371
Prior	5,770
Term Total	162,698
Revolving Loans Amortized Cost Basis	86,104
Grand Total	248,802
Commercial & Industrial [Member] | Special Mention [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	197
2022	4
2021	221
2020	155
Prior	464
Term Total	1,041
Revolving Loans Amortized Cost Basis	202
Grand Total	1,243
Commercial & Industrial [Member] | Substandard [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	476
2020	925
Prior	331
Term Total	1,732
Revolving Loans Amortized Cost Basis	1,465
Grand Total	3,197
Consumer [Member] | Payment Performance [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	15,830
2022	49,165
2021	13,635
2020	6,751
Prior	3,714
Term Total	89,095
Revolving Loans Amortized Cost Basis	43
Grand Total	89,138
Consumer [Member] | Performing [Member] | Payment Performance [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2023	15,830
2022	49,158
2021	13,575
2020	6,751
Prior	3,714
Term Total	89,028
Revolving Loans Amortized Cost Basis	43
Grand Total	89,071
Consumer [Member] | Nonperforming [Member] | Payment Performance [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	7
2021	60
Term Total	67
Grand Total	67
Other Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	200
2021	17,526
2020	6,179
Prior	5,097
Term Total	29,002
Grand Total	29,002
Other Loan [Member] | Pass [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2022	200
2021	17,526
2020	6,179
Prior	5,097
Term Total	29,002
Grand Total	$ 29,002