Annual report pursuant to Section 13 and 15(d)

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

v3.6.0.2
Product Warranty Liability - Reconciliation of the Changes in Product Warranty Liability (Detail) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Guarantees [Abstract]    
Balance at beginning of year $ 653 $ 308
Expense for product warranties 336 930
Product warranty claims paid (303) (585)
Balance at end of year $ 686 $ 653