v3.8.0.1
Goodwill and Intangible Assets - Change in Goodwill (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2018
USD ($)
Goodwill [Roll Forward]  
Balance as of December 30, 2017 $ 60,281
Effect of currency translation 560
Business acquisition 4,802
Balance as of March 31, 2018 $ 65,643