SEGMENT AND GEOGRAPHIC REPORTING (Details - Segment reporting) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2021	May 31, 2020	May 31, 2021	May 31, 2020	Aug. 31, 2020
Segment Reporting Information [Line Items]
Net Revenues	$ 12,777	$ 12,298	$ 36,625	$ 32,049
Income (loss) from operations before income taxes	4,542	3,857	11,079	9,402
Total assets	179,083		179,083		$ 168,422
Parent Company [Member]
Segment Reporting Information [Line Items]
Net Revenues	12,777	12,298	36,625	32,049
Income (loss) from operations before income taxes	4,542	3,857	11,079	9,402
Total assets	179,083	61,579	179,083	61,579
Capital expenditures	383	32	966	106
Capitalized software costs	799	606	2,273	1,733
Depreciation and Amortization	886	788	2,662	2,134
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net Revenues	0	0	0	0
Income (loss) from operations before income taxes	0	0	0	0
Total assets	(38,769)	(40,008)	(38,769)	(40,008)
Capital expenditures	0	0	0	0
Capitalized software costs	0	0	0	0
Depreciation and Amortization	0	0	0	0
Simulations Plus, Inc. [Member]
Segment Reporting Information [Line Items]
Net Revenues	7,916	6,728	19,994	17,559
Income (loss) from operations before income taxes	4,128	2,518	8,614	6,426
Total assets	168,235	57,145	168,235	57,145
Capital expenditures	315	7	686	24
Capitalized software costs	622	494	1,778	1,524
Depreciation and Amortization	470	430	1,406	1,301
Cognigen [Member]
Segment Reporting Information [Line Items]
Net Revenues	2,536	3,039	7,987	8,176
Income (loss) from operations before income taxes	85	610	570	926
Total assets	13,044	10,730	13,044	10,730
Capital expenditures	57	12	246	53
Capitalized software costs	7	4	12	40
Depreciation and Amortization	75	88	240	263
DILIsym [Member]
Segment Reporting Information [Line Items]
Net Revenues	1,331	1,909	4,817	5,692
Income (loss) from operations before income taxes	82	414	297	1,735
Total assets	14,835	14,288	14,835	14,288
Capital expenditures	11	13	16	29
Capitalized software costs	43	32	121	93
Depreciation and Amortization	148	151	446	451
Lixoft [Member]
Segment Reporting Information [Line Items]
Net Revenues	994	622	3,827	622
Income (loss) from operations before income taxes	247	315	1,598	315
Total assets	21,738	19,424	21,738	19,424
Capital expenditures	0	0	18	0
Capitalized software costs	127	76	362	76
Depreciation and Amortization	$ 193	$ 119	$ 570	$ 119