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Loans and Allowance for Credit Losses - Summary of Aging Analysis of Modifications (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Jun. 30, 2024
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	$ 13,417	$ 25,834
Current | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	13,127	25,834
30-59 Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	117	0
60-89 Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	98	0
90+ Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	75	0
Commercial Loans | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	541	4,188
Commercial Loans | Commercial real estate | Current | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	541	4,188
Commercial Loans | Commercial real estate | 30-59 Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	0	0
Commercial Loans | Commercial real estate | 60-89 Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	0	0
Commercial Loans | Commercial real estate | 90+ Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	0	0
Commercial Loans | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	11,591	21,429
Commercial Loans | Commercial and industrial | Current | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	11,591	21,429
Commercial Loans | Commercial and industrial | 30-59 Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	0	0
Commercial Loans | Commercial and industrial | 60-89 Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	0	0
Commercial Loans | Commercial and industrial | 90+ Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	0	0
Commercial Loans | Commercial construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	0
Commercial Loans | Commercial construction | Current | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	0
Commercial Loans | Commercial construction | 30-59 Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	0
Commercial Loans | Commercial construction | 60-89 Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	0
Commercial Loans | Commercial construction | 90+ Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	0
Business banking
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months		110
Business banking | Current | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months		110
Business banking | 30-59 Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months		0
Business banking | 60-89 Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months		0
Business banking | 90+ Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months		0
Consumer Loans | Consumer real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	1,285	107
Consumer Loans | Consumer real estate | Current | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	995	107
Consumer Loans | Consumer real estate | 30-59 Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	117	0
Consumer Loans | Consumer real estate | 60-89 Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	98	0
Consumer Loans | Consumer real estate | 90+ Days Past Due | Accrual
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, modified, after 12 months	$ 75	$ 0

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