Stock Option Activity (Detail) shares in Thousands	3 Months Ended
	Apr. 04, 2017 $ / shares shares
Options Outstanding, Shares
Outstanding, Beginning Balance | shares	1,227
Granted | shares	153
Exercised | shares	(7)
Forfeited | shares	(3)
Outstanding, Ending Balance | shares	1,370
Options outstanding, Weighted Average Exercise Price
Outstanding, Beginning Balance | $ / shares	$ 31.95
Granted | $ / shares	35.95
Exercised | $ / shares	24.20
Forfeited | $ / shares	45.90
Outstanding, Ending Balance | $ / shares	$ 32.40
Options Exercisable, Shares
Options Exercisable Outstanding, Beginning Balance | shares	802
Options Exercisable Outstanding, Ending Balance | shares	901
Options Exercisable, Weighted Average Exercise Price
Options Exercisable, Beginning Balance | $ / shares	$ 27.73
Options Exercisable, Ending Balance | $ / shares	$ 29.27