Allowance for Credit Losses - Amortized Cost Basis of Loans Experiencing Financial difficulty and Modified (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Combination - Term Extension/Rate Change	$ 211
Payment Delay/Term Extension	$ 557	$ 177
Total % of Loans Outstanding (Percentage)	0.11%	0.03%
CRE non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Combination - Term Extension/Rate Change	$ 211
Payment Delay/Term Extension	$ 0	$ 0
Total % of Loans Outstanding (Percentage)	0.03%	0.00%
SFR HELOCs and junior liens
Accounts, Notes, Loans and Financing Receivable [Line Items]
Combination - Term Extension/Rate Change	$ 0
Payment Delay/Term Extension	$ 41	$ 0
Total % of Loans Outstanding (Percentage)	0.01%	0.00%
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Combination - Term Extension/Rate Change	$ 0
Payment Delay/Term Extension	$ 516	$ 177
Total % of Loans Outstanding (Percentage)	0.07%	0.03%