The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

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Name:	us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

LONG-LIVED ASSET IMPAIRMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
LONG-LIVED ASSET IMPAIRMENTS
Impairment charge			$ 215,100
Asset impairment charges	$ 0	$ 0
Coal Operations \| Operating Segment
LONG-LIVED ASSET IMPAIRMENTS
Impairment charge			$ 215,100