Note 3 - Stock Option Activity (Details)	9 Months Ended
	Aug. 27, 2016 $ / shares shares
Outstanding Options (in shares) | shares	2,912,073
Outstanding Options (in dollars per share) | $ / shares	$ 33.37
Granted (in shares) | shares	844,033
Granted (in dollars per share) | $ / shares	$ 33.86
Exercised (in shares) | shares	(539,165)
Exercised (in dollars per share) | $ / shares	$ 24.05
Forfeited or cancelled (in shares) | shares	(164,337)
Forfeited or cancelled (in dollars per share) | $ / shares	$ 39.37
Outstanding Options (in shares) | shares	3,052,604
Outstanding Options (in dollars per share) | $ / shares	$ 34.82