CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 04, 2015	Sep. 28, 2014	Oct. 04, 2015	Sep. 28, 2014
Net income		$ 71,453	$ 82,949	$ 207,118	$ 185,083
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment, net of tax of $0		3,267		(3,000)
Available-for-sale marketable securities:
Unrealized gains (losses) on marketable securities arising during period, net of tax of $48, $(139), $(896), $1,103		283	(138)	(593)	2,166
Less: Reclassification adjustment for gains included in net income, net of tax of $(126), $(348), $(335), $(591)		(247)	(638)	(808)	(1,086)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax, Total		36	(776)	(1,401)	1,080
Defined benefit pension and post-retirement plans:
Amortization of net prior service benefit included in net periodic pension expense and post-retirement benefit income, net of tax of $(42), $(42), $(127), $(127)	[1]	(74)	(74)	(221)	(221)
Other comprehensive income (loss)		3,229	(850)	(4,622)	859
Comprehensive income		$ 74,682	$ 82,099	$ 202,496	$ 185,942

[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."