EMPLOYEE BENEFIT PLANS - Schedule of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Postretirement Medical Plans
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 29	$ 28
Interest cost	18	14
Amortization of gain (loss)	(3)	(3)
Net periodic benefit cost	44	39
Defined Benefit Pension Plans | Chemogas Defined Pension Plan
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	49	18
Interest cost	19	14
Amortization of gain (loss)	1	0
Expected return on plan assets	(14)	(10)
Net periodic benefit cost	$ 55	$ 22