Note 13 - Capital Stock and Stock Compensation - Restricted Stock Awards (Details) - $ / shares	12 Months Ended
Nov. 26, 2016	Nov. 28, 2015
Restricted Shares Outstanding (in shares)	123,014
Granted (in dollars per share)
Remaining Restriction Period (Year)
Restricted Stock [Member]
Restricted Shares Outstanding (in shares)	123,014	134,154
Granted (in dollars per share)	$ 29.66
Restricted Stock [Member] \| July 17, 2013 [Member]
Restricted Shares Outstanding (in shares)	25,200
Granted (in dollars per share)	$ 16.64
Remaining Restriction Period (Year)	1 year 219 days
Restricted Stock [Member] \| January 15, 2014 [Member]
Restricted Shares Outstanding (in shares)	48,000
Granted (in dollars per share)	$ 14.12
Remaining Restriction Period (Year)	36 days
Restricted Stock [Member] \| January 14, 2015 [Member]
Restricted Shares Outstanding (in shares)	40,000
Granted (in dollars per share)	$ 20.21
Remaining Restriction Period (Year)	1 year 36 days
Restricted Stock [Member] \| July 14, 2015 [Member]
Restricted Shares Outstanding (in shares)	2,000
Granted (in dollars per share)	$ 38.02
Remaining Restriction Period (Year)	1 year 219 days
Restricted Stock [Member] \| April 1, 2016 [Member]
Restricted Shares Outstanding (in shares)	5,814
Granted (in dollars per share)	$ 30.96
Remaining Restriction Period (Year)	109 days
Restricted Stock [Member] \| July 12, 2016 [Member]
Restricted Shares Outstanding (in shares)	2,000
Granted (in dollars per share)	$ 25.88
Remaining Restriction Period (Year)	1 year 219 days

The restricted period of time on other than stock (or unit) option plans.

No definition available.

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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