For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13537-108611

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Receivables (Details) $ in Thousands	12 Months Ended
	Feb. 29, 2016 USD ($) item	Feb. 28, 2015 USD ($)	Feb. 28, 2014 USD ($)	Feb. 28, 2013 USD ($)
Receivables
Number of receivables valuation reserves \| item	2
Gross trade receivable \| Customer concentration risk \| Two major customers
Receivables
Concentration Risk, Percentage	15.00%
Gross trade receivable \| Customer concentration risk \| Five top customers
Receivables
Concentration Risk, Percentage	44.00%	42.00%
Allowances for doubtful accounts
Receivables
Valuation reserve	$ 1,733	$ 1,849	$ 2,127	$ 1,764
Allowances for back-to-stock returns
Receivables
Valuation reserve	$ 4,165	$ 4,033	$ 2,552	$ 3,267