Loans and Allowance for Credit Losses - Schedule of Activity in Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Mar. 31, 2026
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Allowance Balance	$ 5,809	$ 5,441	$ 5,441
Provision for (reversal of) credit losses	51	(3)
Loans Charged off	(4)
Recoveries	34	1
Ending Allowance Balance	5,890	5,439	5,809
Real Estate \| Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Allowance Balance	356	246	246
Provision for (reversal of) credit losses	(109)
Ending Allowance Balance	247	246	356
Real Estate \| Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Allowance Balance	1,787	1,572	1,572
Provision for (reversal of) credit losses	186
Ending Allowance Balance	1,973	1,572	1,787
Real Estate \| Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Allowance Balance	1,784	1,926	1,926
Provision for (reversal of) credit losses	(82)	(1)
Ending Allowance Balance	1,702	1,925	1,784
Commercial \| Non-Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Allowance Balance	991	667	667
Provision for (reversal of) credit losses	(10)
Ending Allowance Balance	981	667	991
Agriculture
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Allowance Balance	558	476	476
Provision for (reversal of) credit losses	136
Ending Allowance Balance	694	476	558
Other Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Allowance Balance	135	262	262
Provision for (reversal of) credit losses	(11)	(2)
Loans Charged off	(4)
Recoveries		1
Ending Allowance Balance	120	261	135
Land Development and SIDs
Financing Receivable, Allowance for Credit Loss [Line Items]
Beginning Allowance Balance	198	292	292
Provision for (reversal of) credit losses	(59)
Recoveries	34
Ending Allowance Balance	$ 173	$ 292	$ 198

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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