Quarterly report pursuant to Section 13 or 15(d)

Product Warranty Liability - Additional Information (Detail)

v3.19.3
Product Warranty Liability - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Guarantees [Abstract]        
Expense (income) for product warranties $ 1 $ (37) $ 28 $ 11