Note 14 - Capital Stock and Stock Compensation (Details) - Changes in Non-vested Options (USD $)	12 Months Ended
	Nov. 29, 2014
Employee Stock Option [Member]
Note 14 - Capital Stock and Stock Compensation (Details) - Changes in Non-vested Options [Line Items]
Number of shares outstanding	86,500
Weighted average grant date fair value per share	$ 6.31
Number of shares vested	(63,750)
Weighted average grant date fair value per share, vested	$ 5.69
Number of shares outstanding	22,750
Weighted average grant date fair value per share	$ 8.04
Restricted Stock [Member]
Note 14 - Capital Stock and Stock Compensation (Details) - Changes in Non-vested Options [Line Items]
Number of shares outstanding	165,893
Weighted average grant date fair value per share	$ 12.23
Number of shares granted	66,339
Weighted average grant date fair value per share, granted	$ 14.21
Number of shares vested	(108,495)
Weighted average grant date fair value per share, vested	$ 9.96
Number of shares outstanding	123,737
Weighted average grant date fair value per share	$ 15.28