v3.26.3
Acquisitions - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Oct. 01, 2026
Feb. 02, 2026
May 08, 2025
Sep. 30, 2025
Sep. 30, 2026
Mar. 31, 2026
Business Combination [Line Items]            
Goodwill         $ 1,041,156 $ 1,042,716
River Valley Pipe            
Business Combination [Line Items]            
Total fair value of consideration transferred     $ 18,800      
National Diversified Sales            
Business Combination [Line Items]            
Recognized asset acquired to liability assumed, excess (less)   $ 972,500        
Payments to acquire businesses, gross   984,900        
Cash acquired from acquisition   3,200        
Cash held for sale from acquisition   $ 9,200        
Goodwill         316,299 $ 317,677
Tax deductible goodwill         271,700  
Transaction costs related to acquisition       $ 5,600 $ 8,800  
StormTrap | Subsequent Event            
Business Combination [Line Items]            
Expected consideration transferred $ 530,000