INCOME TAXES (Provision for (Benefit from) Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Provision for (benefit from) income taxes
Current	$ 1,427	$ (703)	$ (2,338)
Deferred income taxes	27,818	16,195	(43,463)
Income tax expense (benefit)	$ 29,245	$ 15,492	$ (45,801)

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration