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Loans and Allowance for Credit Losses - Gross Charge-offs by Loan Class and Year of Origination (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items]
2025			$ 3	$ 7
2024			1,111	778
2023			295	355
2022			38	247
2021			23
Prior			88	43
Financing Receivable, Allowance for Credit Loss, Writeoff, Total	$ 1,119	$ 114	1,558	1,430
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
2024			22	59
2023			103	180
2022				10
2021			17
Prior			11
Financing Receivable, Allowance for Credit Loss, Writeoff, Total	88	65	153	249
Agriculture production
Financing Receivable, Credit Quality Indicator [Line Items]
2024			976
Financing Receivable, Allowance for Credit Loss, Writeoff, Total	976		976
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2025			3	7
2024			113	123
2023			70	91
2022			38	29
2021			5
Prior			17	7
Financing Receivable, Allowance for Credit Loss, Writeoff, Total	45	48	246	257
Secured by real estate \| 1-4 residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
2023				6
Prior			60	36
Financing Receivable, Allowance for Credit Loss, Writeoff, Total	$ 10	$ 1	60	42
Secured by real estate \| Commercial Real Estate \| Non-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
2024				496
Financing Receivable, Allowance for Credit Loss, Writeoff, Total				496
Secured by real estate \| Commercial Real Estate \| Owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
2023			122
Financing Receivable, Allowance for Credit Loss, Writeoff, Total			122
Secured by real estate \| Multi-family real estate
Financing Receivable, Credit Quality Indicator [Line Items]
2022				97
Financing Receivable, Allowance for Credit Loss, Writeoff, Total				97
Secured by real estate \| Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
2024				100
2023				78
2022				111
2021			1
Financing Receivable, Allowance for Credit Loss, Writeoff, Total			$ 1	$ 289