Long-Term Incentives - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Aug. 31, 2013	Feb. 28, 2013
Schedule Of Other Liabilities Noncurrent [Line Items]
Long-Term incentives	$ 1,594	$ 2,652
Accrued Expenses	4,352	5,799
Phantom Stock Liability
Schedule Of Other Liabilities Noncurrent [Line Items]
Long-Term incentives	1,600	2,700
Redemption period	5 years
Number of preceding trading days used in calculation of redemption amount	30 days
Accrued Expenses	$ 1,400
Redemption period current	1 year

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