INCOME TAXES - Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Total expense (benefit) reconciliation
Total expense computed by applying federal rates	$ 89,480	$ 59,249	$ 57,303
State and provincial income taxes, net of federal benefit	914	625	545
Excess depletion	(2,473)	(2,259)	(1,907)
Statutory tax attributable to non-controlling interest	(195)	(224)	(363)
Effect of foreign earnings	(887)	(10,116)	(8,846)
Unrealized foreign exchange gains	896	(988)	853
Rate adjustment	1,279	(6)	0
Changes in estimates	(1,062)	11	119
Valuation allowance	3,842	(6,030)	(15,877)
Other	1,819	1,746	1,099
Total income tax expense	93,613	$ 42,008	$ 32,926
Discrete U.S. GILTI income tax expense	$ 13,000
Effective tax rate (as a percent)	22.00%	14.90%	12.10%