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Employee Benefit Plans Employee Benefit Plans - Additional Information (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Aug. 31, 2022 | Aug. 31, 2021 | Aug. 31, 2020 | Aug. 31, 2019
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Deferred Compensation Arrangement with Individual, Compensation Expense |  |  | $ 1,200,000 | $ 1,100,000 | $ 1,400,000
Equity Securities |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Percentage |  |  | 30.00% |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  | 50.00% |  |
Fixed Income Securities |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Investment within Plan Asset Category, Percentage |  |  | 70.00% |  |
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage |  |  | 50.00% |  |
Other Postretirement Benefit Plan, Defined Benefit |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan, Benefit Obligation |  |  | $ 2,300,000 | 2,400,000 |
Foreign Defined Benefit Plan, Net Periodic Benefit Cost |  |  | (200,000) | (300,000) | (100,000)
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year |  |  | $ 200,000 |  |
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate |  |  | 6.50% |  |
Defined Benefit Plan Health Care Cost Trend Rate In Future Period |  |  | 5.00% |  |
Other Current Liabilities and Other Long-term Liabilities [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Deferred Compensation Liability, Current and Noncurrent |  |  | $ 14,500,000 | 15,700,000 |
401(k) [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay |  |  | 8.00% |  |
Defined Contribution Plan, Cost |  |  | $ 1,100,000 | 1,400,000 | 2,700,000
Maximum Percentage Of Core Contributions Made By Employer |  |  | 3.00% |  |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  | $ 0.50 |  |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount |  |  | 1 |  |
Supplemental Executive Retirement Plan [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan, Benefit Obligation |  |  | 1,300,000 | 1,300,000 |
Defined Contribution Plan, Cost |  |  | 100,000 | 300,000 | 400,000
Restoration Plan [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Contribution Plan, Cost |  |  |  |  | 100,000
Domestic Plan Member |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Amount of benefits expected to be paid in fiscal 2022 |  |  | 2,900,000 |  |
Amount of benefits expected to be paid in fiscal 2023 |  |  | 3,100,000 |  |
Amount of benefits expected to be paid fiscal 2026 through fiscal 2031 |  |  | 14,500,000 |  |
Defined Benefit Plan, Benefit Obligation |  |  | 47,147,000 | 49,640,000 | 47,400,000
Foreign Defined Benefit Plan, Net Periodic Benefit Cost |  |  | $ 868,000 | $ 773,000 | $ 476,000
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate |  |  | 2.55% | 2.40% | 2.90%
Accumulated Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), after Tax |  |  | $ (19,500,000) | $ (21,400,000) |
Defined Benefit Plan, Expected Amortization, Next Fiscal Year |  |  | $ 1,200,000 |  |
Defined Benefit Plan, Expected Long Term Rate Of Returns On Assets Assumption |  |  | 5.45% |  |
Defined Benefit Plan, Plan Assets, Benefits Paid | $ 600,000 |  | $ 2,920,000 | 3,222,000 |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  | 691,000 | 183,000 |
Domestic Plan Member | Subsequent Event [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan, Plan Assets, Benefits Paid |  | $ 100,000 |  |  |
Foreign Plan Member |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Amount of benefits expected to be paid in fiscal 2022 |  |  | 300,000 |  |
Amount of benefits expected to be paid in fiscal 2023 |  |  | 300,000 |  |
Amount of benefits expected to be paid in fiscal 2024 |  |  | 300,000 |  |
Amount of benefits expected to be paid in, fiscal 2025 |  |  | 300,000 |  |
Amount of benefits expected to be paid fiscal 2026 through fiscal 2031 |  |  | 2,200,000 |  |
Defined Benefit Plan, Benefit Obligation |  |  | 14,421,000 | 14,297,000 | $ 15,103,000
Foreign Defined Benefit Plan, Net Periodic Benefit Cost |  |  | $ 110,000 | $ (443,000) | $ 504,000
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate |  |  | 1.30% | 1.40% |
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year |  |  | $ 0 |  |
Defined Benefit Plan, Expected Long Term Rate Of Returns On Assets Assumption |  |  | 3.90% |  |
Defined Benefit Plan, Plan Assets, Benefits Paid |  |  | $ 293,000 | $ 300,000 |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment |  |  | 0 | (1,687,000) |
Defined Benefit Plan, Plan Assets, Contributions by Employer |  |  | 56,000 | $ 323,000 |
Foreign Plan Member | Other Expense [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment |  |  | 700,000 |  |
Foreign Plan Member | Other Comprehensive Income (Loss) [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Curtailment |  |  | $ (1,000,000) |  |
Minimum | Supplemental Executive Retirement Plan [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Contribution Plan Employer Contribution Percentage |  |  | 3.00% |  |
Maximum | Supplemental Executive Retirement Plan [Member] |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Defined Contribution Plan Employer Contribution Percentage |  |  | 6.00% |  |

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- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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- Definition Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4587-114921 + Details
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- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e2709-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4587-114921 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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- Definition Amount of payment to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(5) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 + Details
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- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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- Definition Ultimate trend rate for health care cost for defined benefit postretirement plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (l) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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