Annual report pursuant to Section 13 and 15(d)

Commitments and Contengencies (Details Textual 1)

v2.4.1.9
Commitments and Contengencies (Details Textual 1)
12 Months Ended
Feb. 28, 2015
Workforce subject to collective bargaining arrangements [Member]  
Concentration Risk [Line Items]  
Concentration risk, Percentage 14.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_WorkforceSubjectToCollectiveBargainingArrangementsMember
Workforce subject to collective bargaining arrangements expiring within one year [Member]  
Concentration Risk [Line Items]  
Concentration risk, Percentage 7.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_WorkforceSubjectToCollectiveBargainingArrangementsExpiringWithinOneYearMember