CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares shares in Thousands	Dec. 30, 2017	Dec. 31, 2016
Stockholders' Equity Attributable to Parent [Abstract]
Preferred Stock, Shares Authorized	40	40
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, issued (in shares)	0	0
Common stock, authorized	400,000	400,000
Common stock, par value (in dollars per share)	$ 0.008	$ 0.008
Common stock, issued (in shares)	170,375	169,943
Common stock, outstanding (in shares)	125,303	130,795
Treasury stock, at cost (in shares)	45,072	39,148