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v3.23.3

Description of Business and Significant Accounting Policies (Narrative) (Details) | 12 Months Ended
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Aug. 31, 2023 USD ($) Segment | Aug. 31, 2022 USD ($) | Aug. 31, 2021 USD ($)
Description Of Business And Significant Accounting Policies [Line Items] |  |  |
Number of reportable segments | Segment | 2 |  |
Percentage of marketable securities investments mature within one year | 96.00% |  |
Percentage of marketable securities investments mature within one to two years | 4.00% |  |
Allowance for expected credit losses | $ 5,000,000.0 | $ 4,100,000 |
Impairments | $ 0 | $ 0 | $ 0
Building [Member] | Minimum [Member] |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |
Useful life | 15 years |  |
Building [Member] | Maximum [Member] |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |
Useful life | 40 years |  |
Equipment [Member] | Minimum [Member] |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |
Useful life | 3 years |  |
Equipment [Member] | Maximum [Member] |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |
Useful life | 7 years |  |
Leased Barrier Transfer Machines [Member] | Minimum [Member] |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |
Useful life | 8 years |  |
Leased Barrier Transfer Machines [Member] | Maximum [Member] |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |
Useful life | 10 years |  |
Computer Hardware and Software [Member] | Minimum [Member] |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |
Useful life | 3 years |  |
Computer Hardware and Software [Member] | Maximum [Member] |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |
Useful life | 5 years |  |
Leased Barriers [Member] |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |
Useful life | 12 years |  |
Other [Member] | Minimum [Member] |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |
Useful life | 2 years |  |
Other [Member] | Maximum [Member] |  |  |
Description Of Business And Significant Accounting Policies [Line Items] |  |  |
Useful life | 20 years |  |

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