SEGMENT AND GEOGRAPHIC REPORTING - Revenue by Product and Service (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2022	May 31, 2021	May 31, 2022	May 31, 2021
Segment Reporting Information [Line Items]
Total revenues	$ 14,959	$ 12,777	$ 42,172	$ 36,625
Revenue benchmark | Product concentration risk
Segment Reporting Information [Line Items]
Concentration percentage	100.00%	100.00%	100.00%	100.00%
Services
Segment Reporting Information [Line Items]
Total revenues	$ 5,312	$ 4,479	$ 15,405	$ 14,288
Services | Revenue benchmark | Product concentration risk
Segment Reporting Information [Line Items]
Concentration percentage	36.00%	35.00%	37.00%	39.00%
Services | Other
Segment Reporting Information [Line Items]
Total revenues	$ 282	$ 635	$ 1,027	$ 1,174
Services | Other | Revenue benchmark | Product concentration risk
Segment Reporting Information [Line Items]
Concentration percentage	5.00%	14.00%	7.00%	8.00%
Services | PKPD
Segment Reporting Information [Line Items]
Total revenues	$ 2,482	$ 1,925	$ 7,030	$ 6,755
Services | PKPD | Revenue benchmark | Product concentration risk
Segment Reporting Information [Line Items]
Concentration percentage	47.00%	43.00%	46.00%	47.00%
Services | QSP/QST
Segment Reporting Information [Line Items]
Total revenues	$ 1,197	$ 1,180	$ 4,190	$ 4,047
Services | QSP/QST | Revenue benchmark | Product concentration risk
Segment Reporting Information [Line Items]
Concentration percentage	23.00%	26.00%	27.00%	28.00%
Services | PBPK
Segment Reporting Information [Line Items]
Total revenues	$ 1,351	$ 739	$ 3,158	$ 2,312
Services | PBPK | Revenue benchmark | Product concentration risk
Segment Reporting Information [Line Items]
Concentration percentage	25.00%	17.00%	20.00%	16.00%
Services | Service
Segment Reporting Information [Line Items]
Total revenues	$ 5,312	$ 4,479	$ 15,405	$ 14,288
Services | Service | Revenue benchmark | Product concentration risk
Segment Reporting Information [Line Items]
Concentration percentage	100.00%	100.00%	100.00%	100.00%
Software
Segment Reporting Information [Line Items]
Total revenues	$ 9,647	$ 8,298	$ 26,767	$ 22,337
Software | Revenue benchmark | Product concentration risk
Segment Reporting Information [Line Items]
Concentration percentage	64.00%	65.00%	63.00%	61.00%
Software | GastroPlus
Segment Reporting Information [Line Items]
Total revenues	$ 6,434	$ 5,426	$ 15,869	$ 13,245
Software | GastroPlus | Revenue benchmark | Product concentration risk
Segment Reporting Information [Line Items]
Concentration percentage	67.00%	65.00%	59.00%	59.00%
Software | MonolixSuite
Segment Reporting Information [Line Items]
Total revenues	$ 1,025	$ 948	$ 4,817	$ 3,664
Software | MonolixSuite | Revenue benchmark | Product concentration risk
Segment Reporting Information [Line Items]
Concentration percentage	11.00%	11.00%	18.00%	16.00%
Software | ADMET Predictor
Segment Reporting Information [Line Items]
Total revenues	$ 1,593	$ 1,488	$ 4,419	$ 3,872
Software | ADMET Predictor | Revenue benchmark | Product concentration risk
Segment Reporting Information [Line Items]
Concentration percentage	17.00%	18.00%	17.00%	17.00%
Software | Other
Segment Reporting Information [Line Items]
Total revenues	$ 595	$ 436	$ 1,662	$ 1,556
Software | Other | Revenue benchmark | Product concentration risk
Segment Reporting Information [Line Items]
Concentration percentage	6.00%	5.00%	6.00%	7.00%
Software | Product
Segment Reporting Information [Line Items]
Total revenues	$ 9,647	$ 8,298	$ 26,767	$ 22,337
Software | Product | Revenue benchmark | Product concentration risk
Segment Reporting Information [Line Items]
Concentration percentage	100.00%	100.00%	100.00%	100.00%