Investment Securities - Unrealized Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
AFS, Less than 12 Months, Fair Value	$ 22,128	$ 6,057
AFS, Less than 12 months, Unrealized Losses	(197)	(8)
AFS,12 Months or Longer, Fair Value	178,305	199,482
AFS, 12 months or longer, Unrealized Losses	(17,760)	(17,359)
AFS, Total, Fair Value	200,433	205,539
AFS, Total, Unrealized Losses	(17,957)	(17,367)
U.S. Treasuries
Debt Securities, Available-for-sale [Line Items]
AFS, Less than 12 Months, Fair Value	0	0
AFS, Less than 12 months, Unrealized Losses	0	0
AFS,12 Months or Longer, Fair Value	128,683	149,228
AFS, 12 months or longer, Unrealized Losses	(12,664)	(12,192)
AFS, Total, Fair Value	128,683	149,228
AFS, Total, Unrealized Losses	(12,664)	(12,192)
Municipal
Debt Securities, Available-for-sale [Line Items]
AFS, Less than 12 Months, Fair Value	894	0
AFS, Less than 12 months, Unrealized Losses	(3)	0
AFS,12 Months or Longer, Fair Value	8,360	8,473
AFS, 12 months or longer, Unrealized Losses	(2,442)	(2,331)
AFS, Total, Fair Value	9,254	8,473
AFS, Total, Unrealized Losses	(2,445)	(2,331)
Corporate
Debt Securities, Available-for-sale [Line Items]
AFS, Less than 12 Months, Fair Value	0	0
AFS, Less than 12 months, Unrealized Losses	0	0
AFS,12 Months or Longer, Fair Value	4,457	4,413
AFS, 12 months or longer, Unrealized Losses	(543)	(587)
AFS, Total, Fair Value	4,457	4,413
AFS, Total, Unrealized Losses	(543)	(587)
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
AFS, Less than 12 Months, Fair Value	0	0
AFS, Less than 12 months, Unrealized Losses	0	0
AFS,12 Months or Longer, Fair Value	4,760	5,154
AFS, 12 months or longer, Unrealized Losses	(38)	(37)
AFS, Total, Fair Value	4,760	5,154
AFS, Total, Unrealized Losses	(38)	(37)
Mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
AFS, Less than 12 Months, Fair Value	21,234	6,057
AFS, Less than 12 months, Unrealized Losses	(194)	(8)
AFS,12 Months or Longer, Fair Value	32,045	32,214
AFS, 12 months or longer, Unrealized Losses	(2,073)	(2,212)
AFS, Total, Fair Value	53,279	38,271
AFS, Total, Unrealized Losses	$ (2,267)	$ (2,220)

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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