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Goodwill and Intangible Assets - Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
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Aug. 31, 2017 | Feb. 28, 2017
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Life (in years) | 11 years 2 months 12 days | 8 years 9 months 18 days
Gross Carrying Amount | $ 78,623 | $ 61,947
Accumulated Amortization | 26,388 | 23,311
Amortized intangible assets, Net | $ 52,235 | $ 38,636
Trademarks and Trade Names [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Life (in years) | 16 years 4 months 24 days | 8 years
Gross Carrying Amount | $ 19,625 | $ 3,642
Accumulated Amortization | 1,809 | 1,234
Amortized intangible assets, Net | $ 17,816 | $ 2,408
Customer Lists [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Life (in years) | 8 years 6 months | 8 years 10 months 25 days
Gross Carrying Amount | $ 58,040 | $ 57,347
Accumulated Amortization | 23,742 | 21,336
Amortized intangible assets, Net | $ 34,298 | $ 36,011
Noncompete [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Life (in years) | 3 months 19 days | 9 months 18 days
Gross Carrying Amount | $ 175 | $ 175
Accumulated Amortization | 116 | 86
Amortized intangible assets, Net | $ 59 | $ 89
Patent [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted Average Remaining Life (in years) | 6 months | 1 year
Gross Carrying Amount | $ 783 | $ 783
Accumulated Amortization | 721 | 655
Amortized intangible assets, Net | $ 62 | $ 128

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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=66006027&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=66006027&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=66006027&loc=d3e16323-109275 + Details
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