Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 29, 2018	Jun. 30, 2017	Jun. 29, 2018	Jun. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 11,521	$ 4,750	$ 18,888	$ 12,624
Foreign currency translation adjustment	(2,351)	1,034	(1,194)	1,468
Total comprehensive income	$ 9,170	$ 5,784	$ 17,694	$ 14,092

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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