SEGMENT AND GEOGRAPHIC REPORTING (Details - geographic) - USD ($)	3 Months Ended								12 Months Ended
	Aug. 31, 2020	May 31, 2020	Feb. 29, 2020	Nov. 30, 2019	Aug. 31, 2019	May 31, 2019	Feb. 28, 2019	Nov. 30, 2018	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 9,540,000	$ 12,298,000	$ 10,350,000	$ 9,401,000	$ 8,026,000	$ 9,937,000	$ 8,472,000	$ 7,536,000	$ 41,589,084	$ 33,970,440	$ 29,666,524
Simulations Plus, Inc. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									21,961,000	19,585,000	17,553,000
Cognigen [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									11,105,000	9,321,000	7,857,000
D I L Isym [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									6,948,000	5,065,000	4,257,000
Lixoft [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									1,575,000	0	0
North And South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									29,674,000	22,577,000	18,876,000
North And South America [Member] | Simulations Plus, Inc. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									11,124,000	9,381,000	7,856,000
North And South America [Member] | Cognigen [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									11,105,000	9,321,000	7,857,000
North And South America [Member] | D I L Isym [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									6,057,000	3,875,000	3,163,000
North And South America [Member] | Lixoft [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									1,388,000	0	0
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									5,827,000	5,829,000	5,276,000
Europe [Member] | Simulations Plus, Inc. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									5,024,000	5,144,000	4,964,000
Europe [Member] | Cognigen [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									0	0	0
Europe [Member] | D I L Isym [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									646,000	685,000	312,000
Europe [Member] | Lixoft [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									157,000	0	0
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									6,088,000	5,565,000	5,515,000
Asia [Member] | Simulations Plus, Inc. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									5,812,000	5,060,000	4,733,000
Asia [Member] | Cognigen [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									0	0	0
Asia [Member] | D I L Isym [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									246,000	505,000	782,000
Asia [Member] | Lixoft [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									$ 30,000	$ 0	$ 0