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Income Taxes - Components of Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Taxes
Income tax at federal statutory rates (21%)	$ 36,876	$ 18,098	$ 24,144
State income taxes, net of federal benefits	3,791	2,067	2,601
Tax-exempt loan interest income	(4,437)	(5,208)	(4,862)
Research And Development Tax Credit	(2,400)
Non-deductible compensation	(642)	(514)	(852)
Stock-based compensation	(345)	(402)	(733)
Bank-owned life insurance income	(777)	(374)	(603)
Non-deductible acquisition costs		(427)
Other	204	(212)	(34)
Income tax expense	$ 33,554	$ 14,910	$ 21,365

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