Note 8 - Accounting for Share-based Compensation - Stock Option Activity (Details)	3 Months Ended
	Mar. 04, 2017 $ / shares shares
Outstanding Options (in shares) | shares	2,986,481
Outstanding Options (in dollars per share) | $ / shares	$ 34.92
Granted (in shares) | shares	683,425
Granted (in dollars per share) | $ / shares	$ 49.95
Exercised (in shares) | shares	(261,346)
Exercised (in dollars per share) | $ / shares	$ 32.71
Forfeited or cancelled (in shares) | shares	(66,589)
Forfeited or cancelled (in dollars per share) | $ / shares	$ 36.68
Outstanding Options (in shares) | shares	3,341,971
Outstanding Options (in dollars per share) | $ / shares	$ 38.13