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INCOME TAXES - Effective income tax rate reconciliation (Details) - item	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
INCOME TAXES
Tax at statutory rate	21.00%	21.00%	21.00%	21.00%
Nontaxable interest and dividends	(0.40%)	(0.50%)	(0.50%)	(0.50%)
Tax credits	(4.10%)	(2.80%)	(4.30%)	(2.50%)
State taxes	1.30%	2.50%	1.80%	1.90%
Other	0.20%	1.30%	0.50%	0.90%
Effective income tax rate reconciliation, percent, Total	18.00%	21.50%	18.50%	20.80%
State and Local Jurisdiction
INCOME TAXES
Number Of Pending Audits	0		0

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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