Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.2
Product Warranty Liability - Reconciliation of the Changes in Product Warranty Liability (Detail) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Guarantees [Abstract]    
Balance at beginning of period $ 366 $ 493
Expense for product warranties 27 48
Product warranty claims paid (35) (49)
Balance at end of period $ 358 $ 492