EMPLOYEE BENEFIT PLANS - Schedule of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Postretirement Medical Plans
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	$ 58	$ 56
Interest cost	35	28
Amortization of gain (loss)	(5)	(5)
Net periodic benefit cost	88	79
Defined Benefit Pension Plans | Chemogas Defined Pension Plan
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	107	37
Interest cost	40	28
Amortization of gain (loss)	2	0
Expected return on plan assets	(29)	(21)
Net periodic benefit cost	$ 120	$ 44