Income Taxes - Reconciliation of Change in Unrecognized Tax Benefits (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Feb. 28, 2015	Feb. 28, 2014
Income Tax Disclosure [Abstract]
Balance at beginning of year	$ 246us-gaap_UnrecognizedTaxBenefits	$ 96us-gaap_UnrecognizedTaxBenefits
Additions (reductions) based on tax positions related to the current year	166	182
Reductions due to lapses of statutes of limitations	(82)	(32)
Balance at end of year	$ 330us-gaap_UnrecognizedTaxBenefits	$ 246us-gaap_UnrecognizedTaxBenefits

Unrecognized Tax Benefits Increases Decreases Resulting From Current Period Tax Positions

No definition available.

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- Details

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- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Unrecognized Tax Benefit

-URI http://asc.fasb.org/extlink&oid=6527854

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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- Definition

Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15A

-Subparagraph (a)(4)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

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