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Investment Securities - Pledged Investment Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Marketable Securities [Line Items]
Securities available-for-sale	$ 103,204	$ 108,083
Federal Funds Purchased
Marketable Securities [Line Items]
Securities available-for-sale	47,094	48,964
Deposits and Federal Funds Purchased
Marketable Securities [Line Items]
Securities available-for-sale	99,781	104,399
CALIFORNIA | Deposits
Marketable Securities [Line Items]
Securities available-for-sale	$ 52,687	$ 55,435

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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