Quarterly report pursuant to Section 13 or 15(d)

Product Warranty Liability - Additional Information (Detail)

v3.10.0.1
Product Warranty Liability - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Guarantees [Abstract]        
Expense (income) for product warranties $ 76 $ 22 $ 87 $ (59)