Stockholders' Equity Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 02, 2016	Jan. 02, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at beginning of period			$ 527,736	$ 752,914
Comprehensive income	$ 23,488	$ 45,965	52,978	112,896
Cash dividends			(51,464)	(47,793)
Repurchases of common stock			(90,964)	(162,492)
Share-based compensation			16,356	14,260
Exercises of stock options			10,194	10,600
Vesting of restricted shares			(4,260)	(3,853)
Cumulative Effect of New Accounting Principle in Period of Adoption		0		0	$ 1,880
Tax benefit from share-based compensation			0	1,898
Other			139	145
Balance at end of period	$ 462,595	$ 678,575	$ 462,595	$ 678,575