SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details - Fair value measurements) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Aug. 31, 2021	Aug. 31, 2020
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value assets	$ 36,984	$ 49,207
Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value assets	86,620	66,804
Aquisition Related Contingent Consideration Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value liabilities	3,217	4,731
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value assets	36,984	49,207
Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value assets	86,620	66,804
Fair Value, Inputs, Level 1 [Member] | Aquisition Related Contingent Consideration Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value liabilities	0	0
Fair Value, Inputs, Level 2 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value assets	0	0
Fair Value, Inputs, Level 2 [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value assets	0	0
Fair Value, Inputs, Level 2 [Member] | Aquisition Related Contingent Consideration Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value liabilities	0	0
Fair Value, Inputs, Level 3 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value assets	0	0
Fair Value, Inputs, Level 3 [Member] | Short-term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value assets	0	0
Fair Value, Inputs, Level 3 [Member] | Aquisition Related Contingent Consideration Obligations [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value liabilities	$ 3,217	$ 4,731