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Loans and Leases - Payment Status of Loan Modifications (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Mar. 31, 2024
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	$ 261,482	$ 11,931
Current
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	252,226	10,126
30 TO 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	1,399	90
90 Or More Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	7,857	1,715
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	3,120
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable | Current
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	3,120
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable | 30 TO 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	0
Real Estate Construction and Land | Residential Real Estate Construction Financing Receivable | 90 Or More Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	0
Commercial | Asset Based
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	2,296
Commercial | Asset Based | Current
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	2,296
Commercial | Asset Based | 30 TO 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	0
Commercial | Asset Based | 90 Or More Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	0
Commercial | Venture Capital Loans
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	13,116
Commercial | Venture Capital Loans | Current
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	13,116
Commercial | Venture Capital Loans | 30 TO 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	0
Commercial | Venture Capital Loans | 90 Or More Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	0
Commercial | Other Commercial
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	4,645	4,910
Commercial | Other Commercial | Current
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	3,246	4,910
Commercial | Other Commercial | 30 TO 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	1,399	0
Commercial | Other Commercial | 90 Or More Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	0	0
Consumer
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	8	13
Consumer | Current
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	8	13
Consumer | 30 TO 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	0	0
Consumer | 90 Or More Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	0	0
Commercial | Real Estate Mortgage
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	193,956	2,250
Commercial | Real Estate Mortgage | Current
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	186,826	2,250
Commercial | Real Estate Mortgage | 30 TO 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	0	0
Commercial | Real Estate Mortgage | 90 Or More Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	7,130	0
Multi-Family Real Estate Loans | Real Estate Mortgage
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	39,472
Multi-Family Real Estate Loans | Real Estate Mortgage | Current
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	39,472
Multi-Family Real Estate Loans | Real Estate Mortgage | 30 TO 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	0
Multi-Family Real Estate Loans | Real Estate Mortgage | 90 Or More Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	0
Other Residential Real Estate | Real Estate Mortgage
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	4,869	4,758
Other Residential Real Estate | Real Estate Mortgage | Current
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	4,142	2,953
Other Residential Real Estate | Real Estate Mortgage | 30 TO 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	0	90
Other Residential Real Estate | Real Estate Mortgage | 90 Or More Days Past Due
Financing Receivable, Past Due [Line Items]
Finance Receivable, Loan Restructuring and Refinancing, Payment Status qtd	$ 727	$ 1,715

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-14

Reference 2: http://www.xbrl.org/2003/role/exampleRef
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