Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Capital in Excess of Par Value	Retained Earnings	Accumulated Other Comprehensive Income Loss	Treasury Stock
Balances at Dec. 28, 2013	$ 1,076,189	$ 199	$ 593,355	$ 735,631	$ (62,515)	$ (190,481)
Balances (in shares) at Dec. 28, 2013		228,729,585
Balances, treasury shares at Dec. 28, 2013						(20,166,635)
Net income	175,739			175,739
Derivative instruments, net of tax	8				8
Pension and postretirement plans, net of tax	(35,513)				(35,513)
Stock repurchases (in shares)						(2,014,610)
Stock repurchases	(38,916)					$ (38,916)
Exercise of stock options (in shares)						1,921,397
Exercise of stock options	21,014		2,206			$ 18,808
Issuance of deferred stock awards (in shares)						211,850
Issuance of deferred stock awards			(2,095)			$ 2,095
Amortization of share-based compensation awards	18,917		18,917
Income tax benefits related to share-based payments	7,908		7,908
Performance-contingent restricted stock awards issued (in shares)						652,719
Performance-contingent restricted stock awards issued (Note 16)			(6,168)			$ 6,168
Issuance of deferred compensation (in shares)						13,007
Issuance of deferred compensation			(264)			$ 264
Dividends paid on vested performance-contingent restricted stock and deferred share awards	(608)			(608)
Dividends paid	(101,694)			(101,694)
Balances at Jan. 03, 2015	1,123,044	$ 199	613,859	809,068	(98,020)	$ (202,062)
Balances (in shares) at Jan. 03, 2015		228,729,585
Balances, treasury shares at Jan. 03, 2015						(19,382,272)
Net income	189,191			189,191
Derivative instruments, net of tax	1,218				1,218
Pension and postretirement plans, net of tax	2				2
Shares issued for acquisition (in shares)						481,540
Shares issued for acquisition	12,602		7,493			$ 5,109
Stock repurchases (in shares)						(318,399)
Stock repurchases	(6,858)					$ (6,858)
Exercise of stock options (in shares)						1,838,083
Exercise of stock options	19,617		137			$ 19,480
Issuance of deferred stock awards (in shares)						55,713
Issuance of deferred stock awards			(591)			$ 591
Amortization of share-based compensation awards	15,574		15,574
Income tax benefits related to share-based payments	9,134		9,134
Performance-contingent restricted stock awards issued (in shares)						853,206
Performance-contingent restricted stock awards issued (Note 16)			(8,899)			$ 8,899
Issuance of deferred compensation (in shares)						8,992
Issuance of deferred compensation			(206)			$ 206
Dividends paid on vested performance-contingent restricted stock and deferred share awards	(879)			(879)
Dividends paid	(119,563)			(119,563)
Balances at Jan. 02, 2016	$ 1,243,082	$ 199	636,501	877,817	(96,800)	$ (174,635)
Balances (in shares) at Jan. 02, 2016		228,729,585
Balances, treasury shares at Jan. 02, 2016	(16,463,137)					(16,463,137)
Net income	$ 163,776			163,776
Derivative instruments, net of tax	9,129				9,129
Pension and postretirement plans, net of tax	$ 4,388				4,388
Stock repurchases (in shares)	(6,892,322)					(6,892,322)
Stock repurchases	$ (126,300)		(1,125)			$ (125,175)
Exercise of stock options (in shares)						2,506,255
Exercise of stock options	27,631		(4,323)			$ 31,954
Issuance of deferred stock awards (in shares)						111,868
Issuance of deferred stock awards			(1,411)			$ 1,411
Amortization of share-based compensation awards	18,772		18,772
Income tax benefits related to share-based payments	675		675
Performance-contingent restricted stock awards issued (in shares)						424,787
Performance-contingent restricted stock awards issued (Note 16)			(4,519)			$ 4,519
Issuance of deferred compensation (in shares)						5,765
Issuance of deferred compensation			(114)			$ 114
Dividends paid on vested performance-contingent restricted stock and deferred share awards	(583)			(583)
Dividends paid	(130,490)			(130,490)
Balances at Dec. 31, 2016	$ 1,210,080	$ 199	$ 644,456	$ 910,520	$ (83,283)	$ (261,812)
Balances (in shares) at Dec. 31, 2016		228,729,585
Balances, treasury shares at Dec. 31, 2016	(20,306,784)					(20,306,784)