Annual report pursuant to Section 13 and 15(d)

Warranty - Summary of Activity in Warranty Accrual (Detail)

v3.8.0.1
Warranty - Summary of Activity in Warranty Accrual (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Movement in Standard Product Warranty Accrual      
Balance at Beginning of the Year $ 4,675 $ 5,741 $ 4,884
Warranty Liabilities Acquired 511 0 500
Warranties Issued 1,782 2,281 4,039
Reassessed Warranty Exposure 540 (966) (485)
Warranties Settled (2,372) (2,381) (3,197)
Balance at End of the Year $ 5,136 $ 4,675 $ 5,741