Goodwill and Other Intangible Assets - Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Feb. 28, 2015	Feb. 28, 2014
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	9 years 6 months	7 years 1 month 6 days
Gross Carrying Amount	$ 76,752	$ 72,214
Accumulated Amortization	29,116	23,337
Amortized intangible assets, Net	47,636us-gaap_FiniteLivedIntangibleAssetsNet	48,877us-gaap_FiniteLivedIntangibleAssetsNet
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in 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 7 months 6 days	7 years 1 month 6 days
Gross Carrying Amount	74,670	70,207
Accumulated Amortization	27,486	21,840
Amortized intangible assets, Net	47,184	48,367
Noncompete [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	2 years 9 months 18 days
Gross Carrying Amount	75
Accumulated Amortization	4
Amortized intangible assets, Net	71
Patent [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Life (in years)	3 years	4 years
Gross Carrying Amount	773	773
Accumulated Amortization	392	263
Amortized intangible assets, Net	$ 381	$ 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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