INCOME TAXES - Schedule of Reconciliation of Statutory Federal Income Tax Expense to Effective Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	$ 101,321	$ 113,770	$ 39,598
State and local taxes	1,413	4,756	(3,614)
Orphan Drug & General Business Credit	(7,495)	(35,486)	(39,535)
Stock compensation expense	16,225	7,467	2,209
Foreign Source Income Subject to US Tax		44,492	47,721
Foreign tax rate differential		(34,905)	(69,987)
Section 162(m) limitation	6,764	9,278	9,699
Tax Reserves		32,560	27,296
Intra-entity transfer of assets		(33,432)	5,019
Valuation allowance/deferred benefit	5,274	7,175	3,723
Other		(771)	(1,211)
Provision for income taxes	$ 133,579	$ 114,904	$ 20,918