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Loans and Leases and the Allowance for Credit Losses - Schedule of Aging Analysis of Loan Modifications Made to Borrowers Experiencing Financial Difficulty (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	$ 26,497	$ 9,359
Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	26,284	9,222
30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	167	0
60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	46	0
Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Non-Accural
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	137
Commercial
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	4,865	7,091
Commercial | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	4,841	7,091
Commercial | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	24	0
Commercial | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Commercial | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Commercial | Non-Accural
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Commercial | Commercial and Industrial
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	4,865	7,091
Commercial | Commercial and Industrial | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	4,841	7,091
Commercial | Commercial and Industrial | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	24	0
Commercial | Commercial and Industrial | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Commercial | Commercial and Industrial | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Commercial | Commercial and Industrial | Non-Accural
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Consumer
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	21,632	2,268
Consumer | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	21,443	2,131
Consumer | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	143	0
Consumer | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	46	0
Consumer | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Consumer | Non-Accural
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	137
Consumer | Other
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	572	175
Consumer | Other | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	517	175
Consumer | Other | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	9	0
Consumer | Other | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	46	0
Consumer | Other | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Consumer | Other | Non-Accural
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Consumer | Residential Mortgage
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	15,261	137
Consumer | Residential Mortgage | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	15,261	0
Consumer | Residential Mortgage | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Consumer | Residential Mortgage | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Consumer | Residential Mortgage | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Consumer | Residential Mortgage | Non-Accural
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	137
Consumer | Home Equity
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	610	141
Consumer | Home Equity | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	610	141
Consumer | Home Equity | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Consumer | Home Equity | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Consumer | Home Equity | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Consumer | Home Equity | Non-Accural
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Consumer | Automobile
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	5,189	1,815
Consumer | Automobile | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	5,055	1,815
Consumer | Automobile | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	134	0
Consumer | Automobile | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Consumer | Automobile | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Consumer | Automobile | Non-Accural
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	$ 0	$ 0

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