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Commitments and Contingencies - Changes in Warranty Return Accrual (Details) - USD ($)
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Change in warranty return accrual [Roll Forward]      
Balance at beginning of year $ 19,326,000 $ 19,830,000 $ 20,125,000
Charged to expense 151,764,000 142,240,000 132,719,000
Amounts processed (151,413,000) (142,744,000) (133,014,000)
Balance at end of year $ 19,677,000 $ 19,326,000 $ 19,830,000