Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.3
Product Warranty Liability - Reconciliation of the Changes in Product Warranty Liability (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Guarantees [Abstract]        
Balance at beginning of period $ 358 $ 492 $ 366 $ 493
Expense (income) for product warranties 1 (37) 28 11
Product warranty claims paid (11) (106) (46) (155)
Balance at end of period $ 348 $ 349 $ 348 $ 349