v3.25.4
Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2025
Dec. 31, 2024
Mar. 31, 2025
Property, Plant and Equipment          
Gross property, plant and equipment $ 3,332,415   $ 3,332,415   $ 3,171,429
Accumulated depreciation (1,229,618)   (1,229,618)   (1,104,582)
Net property, plant and equipment 2,102,797   2,102,797   2,066,847
Depreciation expense 47,718 $ 52,279 151,834 $ 148,219  
Capitalized interest expense 747 $ 324 977 $ 1,830  
Gain (loss) on sales and write-downs of certain assets 5,667   13,792    
Corporate and other          
Property, Plant and Equipment          
Gain (loss) on sales and write-downs of certain assets 0   (2)    
Water Solutions          
Property, Plant and Equipment          
Gain (loss) on sales and write-downs of certain assets 5,669   13,540    
Crude Oil Logistics          
Property, Plant and Equipment          
Gain (loss) on sales and write-downs of certain assets (2)   267    
Liquids Logistics          
Property, Plant and Equipment          
Gain (loss) on sales and write-downs of certain assets 0   (13)    
Water treatment facilities and equipment (1)          
Property, Plant and Equipment          
Gross property, plant and equipment 2,397,317   2,397,317   2,240,919
Finance lease, right-of-use asset $ 8,000   $ 8,000    
Water treatment facilities and equipment (1) | Minimum          
Property, Plant and Equipment          
Useful life 3 years   3 years    
Water treatment facilities and equipment (1) | Maximum          
Property, Plant and Equipment          
Useful life 30 years   30 years    
Pipeline and related facilities          
Property, Plant and Equipment          
Gross property, plant and equipment $ 266,324   $ 266,324   266,324
Pipeline and related facilities | Minimum          
Property, Plant and Equipment          
Useful life 30 years   30 years    
Pipeline and related facilities | Maximum          
Property, Plant and Equipment          
Useful life 40 years   40 years    
Crude oil tanks and related equipment          
Property, Plant and Equipment          
Gross property, plant and equipment $ 230,963   $ 230,963   230,174
Crude oil tanks and related equipment | Minimum          
Property, Plant and Equipment          
Useful life 2 years   2 years    
Crude oil tanks and related equipment | Maximum          
Property, Plant and Equipment          
Useful life 30 years   30 years    
Buildings and leasehold improvements          
Property, Plant and Equipment          
Gross property, plant and equipment $ 124,744   $ 124,744   124,388
Buildings and leasehold improvements | Minimum          
Property, Plant and Equipment          
Useful life 3 years   3 years    
Buildings and leasehold improvements | Maximum          
Property, Plant and Equipment          
Useful life 40 years   40 years    
Natural gas liquids terminal and storage assets          
Property, Plant and Equipment          
Gross property, plant and equipment $ 100,207   $ 100,207   99,805
Natural gas liquids terminal and storage assets | Minimum          
Property, Plant and Equipment          
Useful life 2 years   2 years    
Natural gas liquids terminal and storage assets | Maximum          
Property, Plant and Equipment          
Useful life 30 years   30 years    
Land          
Property, Plant and Equipment          
Gross property, plant and equipment $ 64,603   $ 64,603   64,733
Tank bottoms and linefill (2)          
Property, Plant and Equipment          
Gross property, plant and equipment 31,555   31,555   30,623
Information technology equipment          
Property, Plant and Equipment          
Gross property, plant and equipment $ 31,276   $ 31,276   31,319
Information technology equipment | Minimum          
Property, Plant and Equipment          
Useful life 3 years   3 years    
Information technology equipment | Maximum          
Property, Plant and Equipment          
Useful life 7 years   7 years    
Vehicles and railcars (3)          
Property, Plant and Equipment          
Gross property, plant and equipment $ 23,496   $ 23,496   33,629
Finance lease, right-of-use asset $ 100   $ 100   100
Vehicles and railcars (3) | Minimum          
Property, Plant and Equipment          
Useful life 3 years   3 years    
Vehicles and railcars (3) | Maximum          
Property, Plant and Equipment          
Useful life 25 years   25 years    
Other          
Property, Plant and Equipment          
Gross property, plant and equipment $ 19,421   $ 19,421   19,161
Other | Minimum          
Property, Plant and Equipment          
Useful life 3 years   3 years    
Other | Maximum          
Property, Plant and Equipment          
Useful life 20 years   20 years    
Construction in progress          
Property, Plant and Equipment          
Gross property, plant and equipment $ 42,509   $ 42,509   $ 30,354