v3.26.3
EMPLOYEE BENEFIT PLANS - Schedule of Net Periodic Benefit Cost (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Postretirement Medical Plans    
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]    
Service cost $ 69 $ 87
Interest cost 40 53
Amortization of gain (loss) (42) (7)
Net periodic benefit cost 67 133
Defined Benefit Pension Plans | Chemogas Defined Pension Plan    
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]    
Service cost 168 161
Interest cost 78 61
Amortization of gain (loss) 8 3
Expected return on plan assets (50) (45)
Net periodic benefit cost $ 204 $ 180