Inventories (Tables)

3 Months Ended

Mar. 31, 2018

Inventories [Abstract]

Schedule Of Inventories

Inventories consist of the following:
	December 30,	March 31,
	2017	2018
Raw materials	$             20,737	$             21,221
Work in progress	8,461	9,616
Finished goods	33,720	37,291
	$             62,918	$             68,128