Quarterly report pursuant to Section 13 or 15(d)

Product Warranty Liability - Additional Information (Detail)

v3.8.0.1
Product Warranty Liability - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Guarantees [Abstract]        
Expense (income) for product warranties $ 22 $ (81) $ (59) $ 31