Goodwill and Intangible Assets - Changes in Net Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Aug. 31, 2018	Feb. 28, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill, Beginning balance	$ 70,603	$ 70,603
Goodwill acquired	10,341
Goodwill impairment	0	0
Goodwill, Ending balance	$ 80,944	$ 70,603

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Name Accounting Standards Codification
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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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