2. SUMMARY - Fair value measurements (Details) - Fair Value Measurements Recurring [Member] - USD ($)	Nov. 30, 2019	Aug. 31, 2019
Cash and Cash Equivalents [Member]
Cash and cash equivalents	$ 12,610,446	$ 11,435,499
Acquisition-related Contingent Consideration Obligations [Member]
Cash and cash equivalents	1,761,028	1,761,028
Fair Value, Inputs, Level 1 [Member] | Cash and Cash Equivalents [Member]
Cash and cash equivalents	12,610,446	11,435,499
Acquisition-related contingent consideration obligations		0
Fair Value, Inputs, Level 1 [Member] | Acquisition-related Contingent Consideration Obligations [Member]
Cash and cash equivalents	0	0
Fair Value, Inputs, Level 2 [Member] | Cash and Cash Equivalents [Member]
Cash and cash equivalents	0	0
Fair Value, Inputs, Level 2 [Member] | Acquisition-related Contingent Consideration Obligations [Member]
Cash and cash equivalents	0	0
Fair Value, Inputs, Level 3 [Member] | Cash and Cash Equivalents [Member]
Cash and cash equivalents	0	0
Fair Value, Inputs, Level 3 [Member] | Acquisition-related Contingent Consideration Obligations [Member]
Cash and cash equivalents	$ 1,761,028	$ 1,761,028