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Goodwill and Other Intangible Assets - Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
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Nov. 30, 2015 | Feb. 28, 2015
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Life (in years) | 8 years 10 months 24 days | 9 years 6 months
Gross Carrying Amount | $ 77,610 | $ 76,752
Accumulated Amortization | 33,622 | 29,116
Amortized intangible assets, Net | $ 43,988 | $ 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
Amortized intangible assets, Net | $ 0 | $ 0
Customer Lists [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Life (in years) | 8 years 10 months 24 days | 9 years 7 months 6 days
Gross Carrying Amount | $ 75,518 | $ 74,670
Accumulated Amortization | 31,876 | 27,486
Amortized intangible assets, Net | $ 43,642 | $ 47,184
Noncompete [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Life (in years) | 2 years 1 month 6 days | 2 years 9 months 18 days
Gross Carrying Amount | $ 75 | $ 75
Accumulated Amortization | 23 | 4
Amortized intangible assets, Net | $ 52 | $ 71
Patent [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Life (in years) | 2 years 3 months 18 days | 3 years
Gross Carrying Amount | $ 783 | $ 773
Accumulated Amortization | 489 | 392
Amortized intangible assets, Net | $ 294 | $ 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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