Goodwill and Intangible Assets - Changes in Net Carrying Amount of Goodwill (Detail) - USD ($)	12 Months Ended
Feb. 28, 2022	Feb. 28, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Beginning balance	$ 88,647,000	$ 82,527,000
Goodwill acquired	30,000	6,120,000
Goodwill impairment	0	0
Goodwill, Ending balance	$ 88,677,000	$ 88,647,000

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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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