Investment Securities - Available-for-Sale Unrealized Loss Position Summary (Details) $ in Thousands	Mar. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($) security
Investment Securities
12 Months or Longer Fair Value	$ 19,483	$ 20,171
12 Months or Longer Unrealized Losses	$ (2,932)	$ (2,392)
Number of Securities | security	4	4
Total Fair Value	$ 19,483	$ 20,171
Total Unrealized Losses	$ (2,932)	$ (2,392)