Long Term Incentives - Additional Information (Detail) (USD $)			9 Months Ended
Nov. 30, 2012	Feb. 29, 2012	Nov. 30, 2012 Phantom Stock Liability	Nov. 30, 2012 Management Incentive Award
Schedule Of Other Liabilities Noncurrent [Line Items]
Redemption period			5 years
Number of preceding trading days used in calculation of redemption amount			30 days
Management incentives				$ 1,400,000
Redemption period current			1 year
Accrued expenses	$ 5,131,000	$ 5,289,000	$ 200,000

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant