Schedule of revenue by division (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 28, 2022	Feb. 28, 2021
Revenue, Major Customer [Line Items]
Revenues	$ 14,796	$ 13,147	$ 27,213	$ 23,848
Simulations Plus, Inc. [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 7,989	$ 6,646	$ 14,504	$ 12,078
Simulations Plus, Inc. [Member] | Revenue Benchmark [Member] | Customer Concentration Risk [Member]
Revenue, Major Customer [Line Items]
Concentration percentage	54.00%	51.00%	53.00%	51.00%
Cognigen [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 2,437	$ 2,783	$ 4,940	$ 5,451
Cognigen [Member] | Revenue Benchmark [Member] | Customer Concentration Risk [Member]
Revenue, Major Customer [Line Items]
Concentration percentage	17.00%	21.00%	18.00%	23.00%
DILIsym [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 2,102	$ 2,114	$ 3,819	$ 3,486
DILIsym [Member] | Revenue Benchmark [Member] | Customer Concentration Risk [Member]
Revenue, Major Customer [Line Items]
Concentration percentage	14.00%	16.00%	14.00%	15.00%
Lixoft [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 2,268	$ 1,604	$ 3,950	$ 2,833
Lixoft [Member] | Revenue Benchmark [Member] | Product Concentration Risk [Member]
Revenue, Major Customer [Line Items]
Concentration percentage	15.00%	12.00%	15.00%	11.00%
All Divisions [Member] | Revenue Benchmark [Member] | Product Concentration Risk [Member]
Revenue, Major Customer [Line Items]
Concentration percentage	100.00%	100.00%	100.00%	100.00%