XML 69 R58.htm IDEA: XBRL DOCUMENT v3.21.2
Commitments and Contingencies (Details) - USD ($)
3 Months Ended 6 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Mar. 31, 2019
Change in warranty return accrual [Roll Forward]          
Balance at beginning of year $ 20,010,000 $ 22,192,000 $ 21,093,000 $ 18,300,000  
Charged to expense 30,837,000 30,872,000 58,098,000 53,961,000  
Amounts processed (29,972,000) (30,565,000) (58,316,000) (49,762,000)  
Balance at end of year $ 20,875,000 $ 22,499,000 $ 20,875,000 $ 22,499,000  
Contingencies [Abstract]          
Estimated additional import duties         $ 17,000,000