INCOME TAXES - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Tax Contingency [Line Items]
Income tax rate	15.50%	16.30%	16.90%
Investment tax credit	$ 37.2	$ 28.4	$ 23.7
Income taxes (refunded) paid	(22.6)	58.0	$ 94.0
Operating loss carryforwards, valuation allowance	30.8
Unrecognized tax benefits	6.3	$ 5.4
Unrecognized tax benefits which affect the effective tax rate if recognized	$ 6.7
North Carolina and Maryland
Income Tax Contingency [Line Items]
Income tax concentration percentage	50.00%
Federal
Income Tax Contingency [Line Items]
Operating loss carryforwards	$ 53.3
Maximum
Income Tax Contingency [Line Items]
Income tax rate	21.00%	21.00%	21.00%

Income Taxes Paid, Concentration Percentage

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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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Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax.

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The amount deducted from an entities' taxes, reflecting a percentage of an amount invested in certain assets spread over the useful life of those assets; includes deferred investment tax credits.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized.

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Amount of unrecognized tax benefits.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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