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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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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.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

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SIGNIFICANT ACCOUNTING POLICIES - Goodwill (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2022 USD ($)	May 31, 2021 USD ($)	May 31, 2022 USD ($) reportingUnit	May 31, 2021 USD ($)
Accounting Policies [Abstract]
Number of reporting units \| reportingUnit			4
Goodwill [Roll Forward]
Goodwill, beginning balance			$ 12,921
Addition			0
Impairments	$ 0	$ 0	0	$ 0
Goodwill, ending balance	12,921		12,921
Cognigen
Goodwill [Roll Forward]
Goodwill, beginning balance			4,789
Addition			0
Impairments			0
Goodwill, ending balance	4,789		4,789
Developed technologies–DILIsym acquisition
Goodwill [Roll Forward]
Goodwill, beginning balance			5,598
Addition			0
Impairments			0
Goodwill, ending balance	5,598		5,598
Developed technologies–Lixoft acquisition
Goodwill [Roll Forward]
Goodwill, beginning balance			2,534
Addition			0
Impairments			0
Goodwill, ending balance	$ 2,534		$ 2,534