Securities - Schedule of Amortized Cost of Debt Securities Held-to-Maturity, Aggregated by Credit Quality Indicator (Details) $ in Thousands	Mar. 31, 2024 USD ($)
Securities Financing Transaction [Line Items]
Amortized cost of debt securities held-to-maturity	$ 300,422
Investment Grade
Securities Financing Transaction [Line Items]
Amortized cost of debt securities held-to-maturity	286,886
Non-Investment Grade/Non-rated
Securities Financing Transaction [Line Items]
Amortized cost of debt securities held-to-maturity	13,536
State and municipal debt obligations
Securities Financing Transaction [Line Items]
Amortized cost of debt securities held-to-maturity	213,231
State and municipal debt obligations | Investment Grade
Securities Financing Transaction [Line Items]
Amortized cost of debt securities held-to-maturity	213,231
State and municipal debt obligations | Non-Investment Grade/Non-rated
Securities Financing Transaction [Line Items]
Amortized cost of debt securities held-to-maturity	0
Corporate debt securities
Securities Financing Transaction [Line Items]
Amortized cost of debt securities held-to-maturity	66,583
Corporate debt securities | Investment Grade
Securities Financing Transaction [Line Items]
Amortized cost of debt securities held-to-maturity	53,047
Corporate debt securities | Non-Investment Grade/Non-rated
Securities Financing Transaction [Line Items]
Amortized cost of debt securities held-to-maturity	13,536
Non-agency commercial MBS
Securities Financing Transaction [Line Items]
Amortized cost of debt securities held-to-maturity	20,608
Non-agency commercial MBS | Investment Grade
Securities Financing Transaction [Line Items]
Amortized cost of debt securities held-to-maturity	20,608
Non-agency commercial MBS | Non-Investment Grade/Non-rated
Securities Financing Transaction [Line Items]
Amortized cost of debt securities held-to-maturity	$ 0