Goodwill and Other Intangible Assets - Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
Nov. 30, 2014	Feb. 28, 2014
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	9 years 8 months 12 days	7 years 1 month 6 days
Gross Carrying Amount	$ 73,864	$ 72,214
Accumulated Amortization	27,586	23,337
Amortized intangible assets, Net	46,278us-gaap_FiniteLivedIntangibleAssetsNet	48,877us-gaap_FiniteLivedIntangibleAssetsNet
Trade names [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	0 years	0 years
Gross Carrying Amount	1,234	1,234
Accumulated Amortization	1,234	1,234
Customer lists [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	9 years 8 months 12 days	7 years 1 month 6 days
Gross Carrying Amount	71,857	70,207
Accumulated Amortization	25,993	21,840
Amortized intangible assets, Net	45,864	48,367
Patent [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	3 years 2 months 12 days	4 years
Gross Carrying Amount	773	773
Accumulated Amortization	359	263
Amortized intangible assets, Net	$ 414	$ 510

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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