Loans And Allowance For Credit Losses (Amortized Cost Basis of Loans Modified After Adoption of ASU 2022-02) (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Mar. 31, 2024
Financing Receivable, Modified, Past Due [Line Items]
Financing Receivable, Modified in Period, Current	$ 224,420	$ 125,281
Financing Receivable, Modified in Period, Thirty to Eighty Nine Days Past Due	3,392	1,666
Financing Receivable, Modified in Period, Ninety Days Past Due	16,681	2,071
Financing Receivable, Modified in Period, Amount	244,493	129,018
Commercial Portfolio Segment [Member] | Business Loan [Member]
Financing Receivable, Modified, Past Due [Line Items]
Financing Receivable, Modified in Period, Current	89,831	25,544
Financing Receivable, Modified in Period, Thirty to Eighty Nine Days Past Due	44	0
Financing Receivable, Modified in Period, Ninety Days Past Due	0	0
Financing Receivable, Modified in Period, Amount	89,875	25,544
Commercial Portfolio Segment [Member] | Business Real Estate Loan [Member]
Financing Receivable, Modified, Past Due [Line Items]
Financing Receivable, Modified in Period, Current	124,311	93,924
Financing Receivable, Modified in Period, Thirty to Eighty Nine Days Past Due	124	0
Financing Receivable, Modified in Period, Ninety Days Past Due	14,667	0
Financing Receivable, Modified in Period, Amount	139,102	93,924
Personal Banking Portfolio Segment [Member] | Personal Real Estate Loan [Member]
Financing Receivable, Modified, Past Due [Line Items]
Financing Receivable, Modified in Period, Current	7,008	3,556
Financing Receivable, Modified in Period, Thirty to Eighty Nine Days Past Due	2,762	1,136
Financing Receivable, Modified in Period, Ninety Days Past Due	1,763	1,761
Financing Receivable, Modified in Period, Amount	11,533	6,453
Personal Banking Portfolio Segment [Member] | Consumer Loan [Member]
Financing Receivable, Modified, Past Due [Line Items]
Financing Receivable, Modified in Period, Current	852	150
Financing Receivable, Modified in Period, Thirty to Eighty Nine Days Past Due	17	17
Financing Receivable, Modified in Period, Ninety Days Past Due	33	14
Financing Receivable, Modified in Period, Amount	902	181
Personal Banking Portfolio Segment [Member] | Credit Card Receivable [Member]
Financing Receivable, Modified, Past Due [Line Items]
Financing Receivable, Modified in Period, Current	2,418	2,107
Financing Receivable, Modified in Period, Thirty to Eighty Nine Days Past Due	445	513
Financing Receivable, Modified in Period, Ninety Days Past Due	218	296
Financing Receivable, Modified in Period, Amount	$ 3,081	$ 2,916