CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock [Member]	Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income/(loss) [Member]
Balance, Beginning at Dec. 29, 2012
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	$ 153,928	$ 0	$ 0	$ 0	$ 153,928	$ 0
Currency translation adjustments	(530)	0	0	0	0	(530)
Change in unrecognized pension benefit costs, net of tax of 2010: $105, 2011: $3,200, 2012: $(137)	3,477	0	0	0	0	3,477
Unrealized gain on interest rate swap, net of tax of 2010: $(342), 2011: $437, 2012: $(149)	817	0	0	0	0	817
Exercise of stock options	3,842	3	3,839	0	0	0
Stock compensation	11,862	0	11,862	0	0	0
Tax benefit on stock compensation	19,315	0	19,315	0	0	0
Purchase of treasury stock	(4,391)	0	0	(4,391)	0	0
Balance, Ending at Dec. 28, 2013	838,347	144	268,229	(151,743)	730,352	(8,635)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	193,312	0	0	0	193,312	0
Currency translation adjustments	(18,770)	0	0	0	0	(18,770)
Change in unrecognized pension benefit costs, net of tax of 2010: $105, 2011: $3,200, 2012: $(137)	(4,420)	0	0	0	0	(4,420)
Unrealized gain on interest rate swap, net of tax of 2010: $(342), 2011: $437, 2012: $(149)	394	0	0	0	0	394
Stock compensation	16,690	0	16,690	0	0	0
Tax benefit on stock compensation	25,490	0	25,490	0	0	0
Purchase of treasury stock	(44,283)	0	0	(44,283)	0	0
Balance, Ending at Jan. 03, 2015	$ 1,006,760	$ 144	$ 310,409	$ (196,026)	$ 923,664	$ (31,431)