v3.26.1
Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
 3 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Mar. 31, 2026
Property, Plant, and Equipment      
Gross property, plant and equipment $ 3,463,534   $ 3,364,033
Accumulated depreciation (1,312,835)   (1,272,286)
Net property, plant and equipment 2,150,699   2,091,747
Depreciation expense 48,497 $ 53,417  
Capitalized interest expense 591 $ 84  
Gain (loss) on sales and write-downs of certain assets 1,984    
Corporate and other      
Property, Plant, and Equipment      
Gain (loss) on sales and write-downs of certain assets (8)    
Water Solutions      
Property, Plant, and Equipment      
Gain (loss) on sales and write-downs of certain assets 1,888    
Crude Oil Logistics      
Property, Plant, and Equipment      
Gain (loss) on sales and write-downs of certain assets 117    
Liquids Logistics      
Property, Plant, and Equipment      
Gain (loss) on sales and write-downs of certain assets (13)    
Water treatment facilities and equipment (1)      
Property, Plant, and Equipment      
Gross property, plant and equipment 2,445,479   2,418,731
Finance lease, right-of-use asset $ 10,300   8,600
Water treatment facilities and equipment (1) | Minimum      
Property, Plant, and Equipment      
Useful life 3 years    
Water treatment facilities and equipment (1) | Maximum      
Property, Plant, and Equipment      
Useful life 30 years    
Pipeline and related facilities      
Property, Plant, and Equipment      
Gross property, plant and equipment $ 266,324   266,324
Pipeline and related facilities | Minimum      
Property, Plant, and Equipment      
Useful life 30 years    
Pipeline and related facilities | Maximum      
Property, Plant, and Equipment      
Useful life 40 years    
Crude oil tanks and related equipment      
Property, Plant, and Equipment      
Gross property, plant and equipment $ 235,107   234,217
Crude oil tanks and related equipment | Minimum      
Property, Plant, and Equipment      
Useful life 2 years    
Crude oil tanks and related equipment | Maximum      
Property, Plant, and Equipment      
Useful life 30 years    
Buildings and leasehold improvements      
Property, Plant, and Equipment      
Gross property, plant and equipment $ 125,978   124,783
Buildings and leasehold improvements | Minimum      
Property, Plant, and Equipment      
Useful life 3 years    
Buildings and leasehold improvements | Maximum      
Property, Plant, and Equipment      
Useful life 40 years    
Natural gas liquids terminal and storage assets      
Property, Plant, and Equipment      
Gross property, plant and equipment $ 101,723   100,404
Natural gas liquids terminal and storage assets | Minimum      
Property, Plant, and Equipment      
Useful life 2 years    
Natural gas liquids terminal and storage assets | Maximum      
Property, Plant, and Equipment      
Useful life 30 years    
Land      
Property, Plant, and Equipment      
Gross property, plant and equipment $ 64,610   64,610
Tank bottoms and linefill (2)      
Property, Plant, and Equipment      
Gross property, plant and equipment 37,551   37,551
Information technology equipment      
Property, Plant, and Equipment      
Gross property, plant and equipment $ 32,547   31,762
Information technology equipment | Minimum      
Property, Plant, and Equipment      
Useful life 3 years    
Information technology equipment | Maximum      
Property, Plant, and Equipment      
Useful life 7 years    
Vehicles (3)      
Property, Plant, and Equipment      
Gross property, plant and equipment $ 23,499   23,734
Finance lease, right-of-use asset $ 500   200
Vehicles (3) | Minimum      
Property, Plant, and Equipment      
Useful life 3 years    
Vehicles (3) | Maximum      
Property, Plant, and Equipment      
Useful life 25 years    
Other      
Property, Plant, and Equipment      
Gross property, plant and equipment $ 19,360   19,360
Other | Minimum      
Property, Plant, and Equipment      
Useful life 3 years    
Other | Maximum      
Property, Plant, and Equipment      
Useful life 20 years    
Construction in progress      
Property, Plant, and Equipment      
Gross property, plant and equipment $ 111,356   $ 42,557