CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	6 Months Ended
	Jun. 27, 2015	Jun. 28, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends per share (in dollars per share)	$ 0.40	$ 0.21
Issuance of shares under employee stock plans (in shares)	21,224	4,671
Issuance of shares under stock grant programs (in shares)	75,149	78,136
Issuance of shares under deferred compensation plans (in shares)	53,508	39,949
Repurchase of shares (in shares)	1,513