Note 8 - Accounting for Share-based Compensation - Stock Option Activity (Details)	6 Months Ended
	Jun. 03, 2017 $ / shares shares
Outstanding Options (in shares) | shares	2,986,481
Outstanding Options (in dollars per share) | $ / shares	$ 34.92
Granted (in shares) | shares	717,596
Granted (in dollars per share) | $ / shares	$ 50.04
Exercised (in shares) | shares	(407,288)
Exercised (in dollars per share) | $ / shares	$ 34.19
Forfeited or cancelled (in shares) | shares	(74,113)
Forfeited or cancelled (in dollars per share) | $ / shares	$ 36.84
Outstanding Options (in shares) | shares	3,222,676
Outstanding Options (in dollars per share) | $ / shares	$ 38.34