Organization and Summary of Significant Accounting Policies - Schedule of Useful Lives of Assets (Detail)	12 Months Ended
Feb. 28, 2017
Building
Property, Plant and Equipment [Line Items]
Property, pant and equipment, useful life	39 years
Vehicles, machinery and equipment
Property, Plant and Equipment [Line Items]
Property, pant and equipment, useful life	5 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, pant and equipment, useful life	5 years

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration