Annual report pursuant to Section 13 and 15(d)

Product Warranty Liability - Reconciliation of the Changes in Product Warranty Liability (Detail)

v3.21.1
Product Warranty Liability - Reconciliation of the Changes in Product Warranty Liability (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Guarantees [Abstract]    
Balance at beginning of year $ 359 $ 366
Expense for product warranties 344 62
Product warranty claims paid (77) (69)
Balance at end of year $ 626 $ 359