Note 13 - Capital Stock and Stock Compensation - Changes in Outstanding Options (Details)	12 Months Ended
	Nov. 26, 2016 $ / shares shares
Outstanding, Shares (in shares) | shares	84,250
Outstanding, weighted average exercise price per share (in dollars per share) | $ / shares	$ 11.42
Exercised, Shares (in shares) | shares	(8,000)
Exercised, weighted average exercise price per share (in dollars per share) | $ / shares	$ 14.31
Forfeited/Expired, Shares (in shares) | shares	(10,000)
Forfeited/Expired, weighted average exercise price per share (in dollars per share) | $ / shares	$ 14.73
Outstanding, Shares (in shares) | shares	66,250
Outstanding, weighted average exercise price per share (in dollars per share) | $ / shares	$ 10.57
Exercisable, Shares (in shares) | shares	66,250
Exercisable, weighted average exercise price per share (in dollars per share) | $ / shares	$ 10.57