Securities - Credit Quality Indicator (Details) $ in Thousands	Dec. 31, 2022 USD ($)
Securities Financing Transaction [Line Items]
Carrying value	$ 342,453
Investment Grade
Securities Financing Transaction [Line Items]
Carrying value	327,459
Non-Investment Grade/Non-rated
Securities Financing Transaction [Line Items]
Carrying value	14,993
State, municipal and sovereign debt obligations
Securities Financing Transaction [Line Items]
Carrying value	260,249
State, municipal and sovereign debt obligations | Investment Grade
Securities Financing Transaction [Line Items]
Carrying value	260,249
State, municipal and sovereign debt obligations | Non-Investment Grade/Non-rated
Securities Financing Transaction [Line Items]
Carrying value	0
Corporate debt securities
Securities Financing Transaction [Line Items]
Carrying value	56,893
Corporate debt securities | Investment Grade
Securities Financing Transaction [Line Items]
Carrying value	41,900
Corporate debt securities | Non-Investment Grade/Non-rated
Securities Financing Transaction [Line Items]
Carrying value	14,993
Non-agency commercial MBS
Securities Financing Transaction [Line Items]
Carrying value	25,310
Non-agency commercial MBS | Investment Grade
Securities Financing Transaction [Line Items]
Carrying value	25,310
Non-agency commercial MBS | Non-Investment Grade/Non-rated
Securities Financing Transaction [Line Items]
Carrying value	$ 0