SIGNIFICANT ACCOUNTING POLICIES (Details - Fair value measurements) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	Feb. 28, 2021	Aug. 31, 2020
Cash and Cash Equivalents [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value assets	$ 42,385	$ 49,207
Short-term Investments [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value assets	75,367	66,804
Aquisition Related Contingent Consideration Obligations [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value liabilities	4,974	4,731
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value assets	42,385	49,207
Fair Value, Inputs, Level 1 [Member] | Short-term Investments [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value assets	75,367	66,804
Fair Value, Inputs, Level 1 [Member] | Aquisition Related Contingent Consideration Obligations [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value liabilities	0	0
Fair Value, Inputs, Level 2 [Member] | Cash and Cash Equivalents [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value assets	0	0
Fair Value, Inputs, Level 2 [Member] | Short-term Investments [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value assets	0	0
Fair Value, Inputs, Level 2 [Member] | Aquisition Related Contingent Consideration Obligations [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value liabilities	0	0
Fair Value, Inputs, Level 3 [Member] | Cash and Cash Equivalents [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value assets	0	0
Fair Value, Inputs, Level 3 [Member] | Short-term Investments [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value assets	0	0
Fair Value, Inputs, Level 3 [Member] | Aquisition Related Contingent Consideration Obligations [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value liabilities	$ 4,974	$ 4,731