Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jun. 27, 2015	Jul. 02, 2016	Jun. 27, 2015
Net income	$ 27,152	$ 28,684	$ 46,441	$ 48,679
Other comprehensive income (loss):
Pension liability adjustments (net of tax of $32 and $385 for the three months ended 2016 and 2015, and $365 and $416 for the six months ended 2016 and 2015, respectively)	(137)	(198)	(45)	(124)
Reclassification adjustments to expense, (net of tax of $0 and ($249), for the three months ended 2016 and 2015, and ($0) and ($498) for the six months ended 2016 and 2015, respectively)	71	985	144	1,971
Unrealized (loss) gain on investments	(252)	1,380	(1,486)	3,336
Foreign currency translation adjustments	(14,935)	3,821	(3,180)	(10,153)
Comprehensive income	$ 11,899	$ 34,672	$ 41,874	$ 43,709