Consolidated Statements of Stockholders' Equity Statement - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Common Stock Held in Treasury	Accumulated Other Comprehensive Loss
Stockholders' Equity, beginning of period at Dec. 30, 2018	$ 648,449	$ 47,042	$ 2,884,696	$ 146,277	$ (2,367,893)	$ (61,673)
Increase (Decrease) in Stockholders' Equity
Net income	31,894	0	0	31,894	0	0
Other comprehensive income, net	6,025	0	0	0	0	6,025
Cash dividends	(23,069)	0	0	(23,069)	0	0
Repurchases of common stock	(29,370)	0	0	0	(29,370)	0
Share-based compensation	5,022	0	5,022	0	0	0
Common stock issued upon exercises of stock options	8,848	0	(205)	0	9,053	0
Common stock issued upon vesting of restricted shares	(6,055)	0	(8,874)	0	2,819	0
Cumulative effect of change in accounting principle	(1,105)	0	0	(1,105)	0	0
Other	55	0	24	(6)	37	0
Stockholders' Equity, end of period at Mar. 31, 2019	640,694	47,042	2,880,663	153,991	(2,385,354)	(55,648)
Stockholders' Equity, beginning of period at Dec. 30, 2018	648,449	47,042	2,884,696	146,277	(2,367,893)	(61,673)
Increase (Decrease) in Stockholders' Equity
Net income	110,407
Other comprehensive income, net	7,563
Stockholders' Equity, end of period at Sep. 29, 2019	649,591	47,042	2,885,404	186,282	(2,415,027)	(54,110)
Stockholders' Equity, beginning of period at Mar. 31, 2019	640,694	47,042	2,880,663	153,991	(2,385,354)	(55,648)
Increase (Decrease) in Stockholders' Equity
Net income	32,386	0	0	32,386	0	0
Other comprehensive income, net	3,835	0	0	0	0	3,835
Cash dividends	(23,124)	0	0	(23,124)	0	0
Repurchases of common stock	(20,391)	0	0	0	(20,391)	0
Share-based compensation	4,986	0	4,986	0	0	0
Common stock issued upon exercises of stock options	10,491	0	(339)	0	10,830	0
Common stock issued upon vesting of restricted shares	(888)	0	(1,852)	0	964	0
Other	59	0	26	(4)	37	0
Stockholders' Equity, end of period at Jun. 30, 2019	648,048	47,042	2,883,484	163,249	(2,393,914)	(51,813)
Increase (Decrease) in Stockholders' Equity
Net income	46,127	0	0	46,127	0	0
Other comprehensive income, net	(2,297)	0	0	0	0	(2,297)
Cash dividends	(23,087)	0	0	(23,087)	0	0
Repurchases of common stock	(26,462)	0	0	0	(26,462)	0
Share-based compensation	3,981	0	3,981	0	0	0
Common stock issued upon exercises of stock options	4,716	0	545	0	4,171	0
Common stock issued upon vesting of restricted shares	(1,489)	0	(2,636)	0	1,147	0
Other	54	0	30	(7)	31	0
Stockholders' Equity, end of period at Sep. 29, 2019	649,591	47,042	2,885,404	186,282	(2,415,027)	(54,110)
Stockholders' Equity, beginning of period at Dec. 29, 2019	516,359	47,042	2,874,001	185,725	(2,536,581)	(53,828)
Increase (Decrease) in Stockholders' Equity
Net income	14,441	0	0	14,441	0	0
Other comprehensive income, net	(12,507)	0	0	0	0	(12,507)
Cash dividends	(26,793)	0	0	(26,793)	0	0
Repurchases of common stock	(43,336)	0	15,000	0	(58,336)	0
Share-based compensation	4,539	0	4,539	0	0	0
Common stock issued upon exercises of stock options	1,610	0	280	0	1,330	0
Common stock issued upon vesting of restricted shares	(3,291)	0	(4,017)	0	726	0
Other	53	0	33	(7)	27	0
Stockholders' Equity, end of period at Mar. 29, 2020	451,075	47,042	2,889,836	173,366	(2,592,834)	(66,335)
Stockholders' Equity, beginning of period at Dec. 29, 2019	516,359	47,042	2,874,001	185,725	(2,536,581)	(53,828)
Increase (Decrease) in Stockholders' Equity
Net income	79,098
Other comprehensive income, net	(5,138)
Stockholders' Equity, end of period at Sep. 27, 2020	521,535	47,042	2,896,767	215,635	(2,578,943)	(58,966)
Stockholders' Equity, beginning of period at Mar. 29, 2020	451,075	47,042	2,889,836	173,366	(2,592,834)	(66,335)
Increase (Decrease) in Stockholders' Equity
Net income	24,904	0	0	24,904	0	0
Other comprehensive income, net	4,149	0	0	0	0	4,149
Cash dividends	(11,181)	0	0	(11,181)	0	0
Share-based compensation	4,787	0	4,787	0	0	0
Common stock issued upon exercises of stock options	10,459	0	(902)	0	11,361	0
Common stock issued upon vesting of restricted shares	(268)	0	(1,041)	0	773	0
Other	58	0	19	(3)	42	0
Stockholders' Equity, end of period at Jun. 28, 2020	483,983	47,042	2,892,699	187,086	(2,580,658)	(62,186)
Increase (Decrease) in Stockholders' Equity
Net income	39,753	0	0	39,753	0	0
Other comprehensive income, net	3,220	0	0	0	0	3,220
Cash dividends	(11,202)	0	0	(11,202)	0	0
Repurchases of common stock	(1,708)	0	0	0	(1,708)	0
Share-based compensation	5,786	0	5,786	0	0	0
Common stock issued upon exercises of stock options	3,303	0	838	0	2,465	0
Common stock issued upon vesting of restricted shares	(1,682)	0	(2,600)	0	918	0
Other	82	0	44	(2)	40	0
Stockholders' Equity, end of period at Sep. 27, 2020	$ 521,535	$ 47,042	$ 2,896,767	$ 215,635	$ (2,578,943)	$ (58,966)