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Goodwill and Other Intangible Assets - Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Feb. 29, 2016 | Feb. 28, 2015
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Life (in years) | 8 years 8 months 12 days | 9 years 6 months
Gross Carrying Amount | $ 77,610 | $ 76,752
Accumulated Amortization | 35,138 | 29,116
Amortized intangible assets, Net | $ 42,472 | $ 47,636
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) | 8 years 8 months 12 days | 9 years 7 months 6 days
Gross Carrying Amount | $ 75,518 | $ 74,670
Accumulated Amortization | 33,353 | 27,486
Amortized intangible assets, Net | $ 42,165 | $ 47,184
Noncompete [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Life (in years) | 1 year 9 months 18 days | 2 years 9 months 18 days
Gross Carrying Amount | $ 75 | $ 75
Accumulated Amortization | 29 | 4
Amortized intangible assets, Net | $ 46 | $ 71
Patent [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Life (in years) | 2 years | 3 years
Gross Carrying Amount | $ 783 | $ 773
Accumulated Amortization | 522 | 392
Amortized intangible assets, Net | $ 261 | $ 381

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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. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References 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 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References 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 + Details
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- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References 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 + Details
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