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, 2025	Mar. 31, 2024
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	$ 19,763	$ 43,552
Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	14,914	40,871
30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	1,947	1,448
60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	514	414
Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	193	216
Non- Accrual
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	2,195	603
Commercial
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	2,266	11,428
Commercial | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	61	11,367
Commercial | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	10	61
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- Accrual
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	2,195	0
Commercial | Commercial and Industrial
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	71	6,520
Commercial | Commercial and Industrial | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	61	6,459
Commercial | Commercial and Industrial | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	10	61
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- Accrual
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Commercial | Commercial Mortgage
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	2,195	4,908
Commercial | Commercial Mortgage | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	4,908
Commercial | Commercial Mortgage | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Commercial | Commercial Mortgage | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Commercial | Commercial Mortgage | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	0
Commercial | Commercial Mortgage | Non- Accrual
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	2,195	0
Consumer
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	17,497	32,124
Consumer | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	14,853	29,504
Consumer | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	1,937	1,387
Consumer | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	514	414
Consumer | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	193	216
Consumer | Non- Accrual
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	603
Consumer | Other
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	2,017	1,625
Consumer | Other | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	1,771	1,252
Consumer | Other | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	58	122
Consumer | Other | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	76	162
Consumer | Other | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	112	89
Consumer | Other | Non- Accrual
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	72	15,864
Consumer | Residential Mortgage | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	15,261
Consumer | Residential Mortgage | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	72	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- Accrual
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	0	603
Consumer | Home Equity
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	1,238	610
Consumer | Home Equity | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	1,139	610
Consumer | Home Equity | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	99	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- Accrual
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	14,170	14,025
Consumer | Automobile | Current
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	11,943	12,381
Consumer | Automobile | 30 - 59 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	1,708	1,265
Consumer | Automobile | 60 - 89 Days Past Due
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	438	252
Consumer | Automobile | Past Due 90 Days or More
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	81	127
Consumer | Automobile | Non- Accrual
Financing Receivable, Modified [Line Items]
Loan modifications made to borrowers experiencing financial difficulty	$ 0	$ 0