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Employee Benefit Plans (Details)
 12 Months Ended
Feb. 28, 2015
Employee Benefit Plans (Textual)  
Minimum period of employee service 3 months
Maximum [Member]  
Employee Benefit Plans (Textual)  
Defined contribution plan, company 25.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
Minimum [Member]  
Employee Benefit Plans (Textual)  
Defined contribution plan, company 4.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
/ us-gaap_RangeAxis
= us-gaap_MinimumMember