FAIR VALUE MEASUREMENTS (Tables)

3 Months Ended

Mar. 31, 2025

FAIR VALUE MEASUREMENTS

Schedule of fair value measurements hierarchy

			Fair Value
	Carrying Value		Level 1		Level 2		Level 3
	(in thousands)
March 31, 2025
Recorded on a recurring basis:
Digital assets	$	42,323	$	42,323	$	—	$	—
Contingent consideration	$	11,324	$	—	$	—	$	11,324
Additional disclosures:
Long-term debt	$	483,754	$	—	$	508,931	$	—
December 31, 2024
Recorded on a recurring basis:
Digital assets	$	45,037	$	45,037	$	—	$	—
Contingent consideration	$	13,100	$	—	$	—	$	13,100
Additional disclosures:
Long-term debt	$	490,387	$	—	$	523,461	$	—

Schedule of fair value measurements inputs

	Valuation Technique(s)	Unobservable Input	Range/Amount (Average) (a)
March 31, 2025
Contingent Consideration	Option approach methodology simulation	Cost of Debt	6.51% - 8.56%
		Coal price volatility	6.2%
		Market price of risk adjustment (annual)	6.2%
December 31, 2024
Contingent Consideration	Option approach methodology simulation	Cost of Debt	6.51% - 8.56%
		Coal price volatility	6.2%
		Market price of risk adjustment (annual)	6.2%
(a) Averages represent the arithmetic average of the inputs and is not weighted by a relative fair value or notional amount

Schedule of contingent consideration liability changes

	Three Months Ended
	March 31,
	2025		2024
	(in thousands)
Beginning balance	$	13,100	$	9,900
Payments		(1,776)		(1,431)
Ending balance	$	11,324	$	8,469