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Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments - Unrealized and realized gains and losses recognized in net income on equity securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Investment Securities, Equity Securities with Readily Determinable Fair Values and Other Investments
Equity Securities	$ 5,573	$ 5,394
Summary of unrealized and realized gains and losses recognized in net income on equity securities
Net gains (losses) recognized during the period on equity securities	180	(24)	$ 59
Unrealized gains (losses) recognized during the reporting period on equity securities still held at the reporting date	$ 180	$ (24)	$ 59

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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