Consideration Transferred (Parenthetical) (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
---|---|---|
Apr. 01, 2016 |
Dec. 31, 2017 |
|
Business Acquisition [Line Items] | ||
Working capital adjustment | $ 425 | |
Atoll GmbH | ||
Business Acquisition [Line Items] | ||
Working capital adjustment | $ 74 |