Quarterly report pursuant to Section 13 or 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
3 Months Ended 9 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Guarantees [Abstract]        
Balance at beginning of period $ 582 $ 504 $ 686 $ 653
(Income) expense for product warranties (81) (158) 31 (45)
Product warranty claims paid (4) (11) (220) (273)
Balance at end of period $ 497 $ 335 $ 497 $ 335