Note 15 - Share Repurchase Program (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
Feb. 27, 2016	Feb. 28, 2015	Nov. 28, 2015	Sep. 30, 2010
2010 Share Repurchase Program [Member]
Stock Repurchased During Period, Value	$ 4,210,000	$ 0
Decreased Value of Common Stock Shares Repurchased	125,000	0
Decreased Value of Additional Paid in Capital for Shares Repurchased	4,085,000	$ 0
Stock Repurchase Program, Authorized Amount				$ 100,000,000
Stock Repurchased During Period, Value	$ 6,518,000		$ 19,290,000

Equity impact of the value of stock that has been repurchased during the period and has not been retired and is not held in treasury. Some state laws may mandate the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

Name:	us-gaap_StockRepurchasedDuringPeriodValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration