Note 12 - Capital Stock and Stock Compensation - Additional Information Regarding Activity in Stock Options (Details) - Restricted Stock [Member]	12 Months Ended
	Nov. 26, 2022 $ / shares shares
Non-vested restricted shares outstanding, shares (in shares) | shares	10,605
Non-vested restricted shares outstanding, grant date fair value (in dollars per share) | $ / shares	$ 21.24
Granted, shares (in shares) | shares	67,099
Granted, grant date fair value (in dollars per share) | $ / shares	$ 16.27
Vested, shares (in shares) | shares	10,605
Vested, grant date fair value (in dollars per share) | $ / shares	$ 21.24
Non-vested restricted shares outstanding, shares (in shares) | shares	67,099
Non-vested restricted shares outstanding, grant date fair value (in dollars per share) | $ / shares	$ 16.27