Annual report pursuant to Section 13 and 15(d)

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

v3.20.1
Product Warranty Liability - Reconciliation of the Changes in Product Warranty Liability (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Guarantees [Abstract]    
Balance at beginning of year $ 366 $ 493
Expense for product warranties 62 234
Product warranty claims paid (69) (276)
Reclassification to liabilities held for sale   (85)
Balance at end of year $ 359 $ 366