Goodwill and Intangible Assets - Changes in Net Carrying Amount of Goodwill (Detail) - USD ($)	6 Months Ended	12 Months Ended
Aug. 31, 2020	Feb. 29, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill, Beginning balance	$ 82,527,000	$ 81,634,000
Goodwill acquired		893,000
Goodwill impairment	0
Goodwill, Ending balance	$ 82,527,000	$ 82,527,000

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.

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