SEGMENT AND GEOGRAPHIC REPORTING (Details - geographic) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2021	May 31, 2020
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 12,777	$ 12,298	$ 36,625	$ 32,049
Simulations Plus, Inc. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	7,916	6,728	19,994	17,559
Cognigen [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	2,536	3,039	7,987	8,176
DILIsym [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,331	1,909	4,817	5,692
Lixoft [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	994	622	3,827	622
Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	9,651	8,662	25,436	22,158
Americas [Member] | Simulations Plus, Inc. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	4,969	3,401	10,372	8,555
Americas [Member] | Cognigen [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	2,536	3,039	7,987	8,176
Americas [Member] | DILIsym [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,285	1,685	4,678	4,890
Americas [Member] | Lixoft [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	861	537	2,399	537
EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,462	1,934	7,022	5,142
EMEA [Member] | Simulations Plus, Inc. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,301	1,719	5,540	4,476
EMEA [Member] | Cognigen [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0	0	0
EMEA [Member] | DILIsym [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	46	130	112	581
EMEA [Member] | Lixoft [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	115	85	1,370	85
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,664	1,702	4,167	4,749
Asia Pacific [Member] | Simulations Plus, Inc. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,646	1,608	4,082	4,528
Asia Pacific [Member] | Cognigen [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	0	0	0
Asia Pacific [Member] | DILIsym [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	0	94	27	221
Asia Pacific [Member] | Lixoft [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 18	$ 0	$ 58	$ 0