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Summary of Significant Accounting Policies - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Unrealized gain (loss) on available-for-sale securities	$ (69,641)	$ (89,041)
Unrealized gain (loss) on held to maturity securities	(2,720)	(3,053)
Unrealized gain (loss) on derivative instruments	7,072	1,212
Tax effect	13,711	19,085
Accumulated other comprehensive income (loss)	$ (51,578)	$ (71,797)

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- Definition

The amount of accumulated other comprehensive income (loss) tax effect.

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Amount, after tax, of accumulated unrealized gain (loss) on investment in debt security classified as held-to-maturity.

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Amount, after tax, of accumulated unrealized gain (loss) on 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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Amount, after tax, of accumulated increase (decrease) in equity from transaction and other event and circumstance from nonowner source.

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Amount, after tax, of accumulated gain (loss) on derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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