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VARIABLE INTEREST ENTITIES - Information Regarding Activity in Alternative Energy Partnerships (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Variable Interest Entity [Line Items]
Gain (loss) on investments in alternative energy partnerships	$ (4,023)	$ (4,888)	$ (5,214)
Tax expense (benefit) recognized from HLBV application	20,276	1,786	4,219
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Fundings	0	3,631	806
Cash distribution from investment	2,293	2,094	2,025
Gain (loss) on investments in alternative energy partnerships	204	365	(1,694)
Tax expense (benefit) recognized from HLBV application	59	45	(362)
Income tax credits recognized	$ 0	$ 0	$ 3,446

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