2. SUMMARY - Fair value measurements (Details) - Fair Value Measurements Recurring [Member] - USD ($)	May 31, 2020	Aug. 31, 2019
Cash and Cash Equivalents [Member]
Fair value assets	$ 7,354,496	$ 11,435,499
Acquisition-related Contingent Consideration Obligations [Member]
Fair value liabilities	6,370,028	1,761,028
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member]
Fair value assets	7,354,496	11,435,499
Fair Value, Inputs, Level 1 [Member] | Acquisition-related Contingent Consideration Obligations [Member]
Fair value liabilities	0	0
Fair Value, Inputs, Level 2 [Member] | Cash and Cash Equivalents [Member]
Fair value assets	0	0
Fair Value, Inputs, Level 2 [Member] | Acquisition-related Contingent Consideration Obligations [Member]
Fair value liabilities	0	0
Fair Value, Inputs, Level 3 [Member] | Cash and Cash Equivalents [Member]
Fair value assets	0	0
Fair Value, Inputs, Level 3 [Member] | Acquisition-related Contingent Consideration Obligations [Member]
Fair value liabilities	$ 6,370,028	$ 1,761,028