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Business Combinations (Narrative) (Details) $ in Thousands | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Aug. 31, 2021 USD ($) | Jul. 31, 2021 USD ($) | Jun. 30, 2021 USD ($) | Dec. 31, 2019 USD ($) | Feb. 28, 2019 USD ($) entity | Aug. 28, 2021 USD ($) | Aug. 29, 2020 USD ($) | Aug. 31, 2019 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Notes payable |  |  |  |  |  | $ 4,750 |  |
Goodwill |  |  |  |  |  | 692,704 | $ 677,579 | $ 677,266
MSC Mexico [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Ownership interest in subsidiary |  | 75.00% |  |  |  |  |  |
TAC [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Number of subsidiaries involved in acquisition | entity |  |  |  |  | 2 |  |  |
Ownership interest in subsidiary |  |  |  |  | 75.00% |  |  |
Payments to acquire business |  |  |  |  | $ 13,911 |  |  |
Post-closing working capital adjustment paid out |  |  |  | $ 2,286 |  |  |  |
Fair value of contingent consideration to be paid out |  | $ 2,600 |  |  |  |  |  |
Non-recurring transaction and integration costs |  |  |  |  |  | $ 659 |  |
Acquired intangible assets |  | 2,575 |  |  |  |  |  |
Goodwill |  | 4,753 |  |  |  |  |  |
TAC [Member] | MSC Mexico [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Payments to acquire business |  | 6,719 |  |  |  |  |  |
Fair value of contingent consideration to be paid out |  | 1,342 |  |  |  |  |  |
Business acquisition purchase price |  | 8,061 |  |  |  |  |  |
TAC [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Acquired intangible assets |  | $ 1,809 |  |  |  |  |  |
Acquired intangible assets useful life |  | 9 years |  |  |  |  |  |
TAC [Member] | Non-Compete Agreements [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Acquired intangible assets |  | $ 766 |  |  |  |  |  |
Acquired intangible assets useful life |  | 3 years |  |  |  |  |  |
TAC [Member] | Total Cash Consideration Fund [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Cash |  | $ 1,969 |  |  |  |  |  |
Notes payable |  | $ 4,750 |  |  |  |  |  |
Hurst [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Ownership interest in subsidiary |  |  |  |  |  | 80.00% |  |
Percentage of ownership interest acquired |  |  | 80.00% |  |  |  |  |
Post-closing working capital adjustment paid out | $ 101 |  |  |  |  |  |  |
Non-recurring transaction and integration costs |  |  |  |  |  | $ 360 |  |
Business acquisition purchase price |  |  | $ 15,301 |  |  |  |  |
Acquired intangible assets |  |  | 4,800 |  |  |  |  |
Goodwill |  |  | 9,282 |  |  |  |  |
Hurst [Member] | Customer Relationships [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Acquired intangible assets |  |  | 4,400 |  |  |  |  |
Acquired intangible assets useful life |  |  |  |  |  | 7 years |  |
Hurst [Member] | Trademark [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Acquired intangible assets |  |  | $ 400 |  |  |  |  |
Acquired intangible assets useful life |  |  | 5 years |  |  |  |  |

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