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SIGNIFICANT ACCOUNTING POLICIES - Schedule of Other Intangible Assets (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
May 31, 2022 | May 31, 2021 | May 31, 2022 | May 31, 2021 | Aug. 31, 2021
Other intangible assets |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Acquisition Value | $ 10,352 |  | $ 10,352 |  | $ 8,650
Accumulated Amortization | 2,635 |  | 2,635 |  | 2,186
Net Book Value | 7,717 |  | 7,717 |  | $ 6,464
Amortization of intangible assets | 160 | $ 137 | $ 449 | $ 412 |
Simulations Plus | ERP |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Amortization Period |  |  | 15 years |  |
Acquisition Value | 1,702 |  | $ 1,702 |  |
Accumulated Amortization | 52 |  | 52 |  |
Net Book Value | 1,650 |  | $ 1,650 |  |
Cognigen | Customer relationships |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Amortization Period |  |  | 8 years |  | 8 years
Acquisition Value | 1,100 |  | $ 1,100 |  | $ 1,100
Accumulated Amortization | 1,065 |  | 1,065 |  | 963
Net Book Value | 35 |  | 35 |  | 137
Cognigen | Trade name |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Acquisition Value | 500 |  | 500 |  | 500
Accumulated Amortization | 0 |  | 0 |  | 0
Net Book Value | 500 |  | $ 500 |  | $ 500
Cognigen | Covenants not to compete |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Amortization Period |  |  | 5 years |  | 5 years
Acquisition Value | 50 |  | $ 50 |  | $ 50
Accumulated Amortization | 50 |  | 50 |  | 50
Net Book Value | 0 |  | $ 0 |  | $ 0
Developed technologies–DILIsym acquisition | Customer relationships |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Amortization Period |  |  | 10 years |  | 10 years
Acquisition Value | 1,900 |  | $ 1,900 |  | $ 1,900
Accumulated Amortization | 951 |  | 951 |  | 807
Net Book Value | 949 |  | 949 |  | 1,093
Developed technologies–DILIsym acquisition | Trade name |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Acquisition Value | 860 |  | 860 |  | 860
Accumulated Amortization | 0 |  | 0 |  | 0
Net Book Value | 860 |  | $ 860 |  | $ 860
Developed technologies–DILIsym acquisition | Covenants not to compete |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Amortization Period |  |  | 4 years |  | 4 years
Acquisition Value | 80 |  | $ 80 |  | $ 80
Accumulated Amortization | 80 |  | 80 |  | 80
Net Book Value | 0 |  | $ 0 |  | $ 0
Developed technologies–Lixoft acquisition | Customer relationships |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Amortization Period |  |  | 14 years |  | 14 years
Acquisition Value | 2,550 |  | $ 2,550 |  | $ 2,550
Accumulated Amortization | 394 |  | 394 |  | 258
Net Book Value | 2,156 |  | 2,156 |  | 2,292
Developed technologies–Lixoft acquisition | Trade name |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Acquisition Value | 1,550 |  | 1,550 |  | 1,550
Accumulated Amortization | 0 |  | 0 |  | 0
Net Book Value | 1,550 |  | $ 1,550 |  | $ 1,550
Developed technologies–Lixoft acquisition | Covenants not to compete |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Amortization Period |  |  | 3 years |  | 3 years
Acquisition Value | 60 |  | $ 60 |  | $ 60
Accumulated Amortization | 43 |  | 43 |  | 28
Net Book Value | $ 17 |  | $ 17 |  | $ 32

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