Note 8 - Stock Compensation Plans (Detail) - Additional information about stock options outstanding (USD $)	12 Months Ended
Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2011
Options outstanding weighted average remaining contractual life	1 year 51 days	2 years	2 years 350 days
Range 1 (Member)
Number exercisable	169,284
Options outstanding weighted average remaining contractual life	1 year 109 days
Weighted average exercise price (in Dollars per share)	7.41
Range 2 (Member)
Number exercisable	101,661
Options outstanding weighted average remaining contractual life	2 years 361 days
Weighted average exercise price (in Dollars per share)	17.43

The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(c)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(iii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant