CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		3 Months Ended
		Apr. 03, 2016	Apr. 05, 2015
Net income		$ 49,986	$ 32,787
Other comprehensive income, net of tax:
Foreign currency translation adjustments		10,271
Available-for-sale marketable securities:
Unrealized gains on marketable securities arising during period, net of tax of $1,253, $704, respectively		3,071	1,799
Less: Reclassification adjustment for gains included in net income, net of tax of $11, $(169), respectively		(83)	(330)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Total		2,988	1,469
Defined benefit pension and post-retirement plans:
Amortization of prior service (credit) cost included in net periodic pension and post-retirement expense/income, net of tax of $(46), $(42), respectively	[1]	(80)	(74)
Other comprehensive income		13,179	1,395
Comprehensive income		$ 63,165	$ 34,182

[1] The amortization of prior service benefit is included in the computation of net periodic pension cost and postretirement benefit; see Note O: "Retirement Plans."