Quarterly report pursuant to Section 13 or 15(d)

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

v3.5.0.2
Product Warranty Liability - Reconciliation of the Changes in Product Warranty Liability (Detail) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Guarantees [Abstract]    
Balance at beginning of period $ 686 $ 653
Expense for product warranties 166 91
Product warranty claims paid (158) (112)
Balance at end of period $ 694 $ 632