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Business Combinations (Narrative) (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Aug. 31, 2019 USD ($) entity | Sep. 01, 2018 USD ($) | Sep. 02, 2017 USD ($)
Business Acquisition [Line Items] |  |  |
Loans to related parties | $ 2,850 |  |
Goodwill | $ 677,266 | $ 674,998 | $ 633,728
Goodwill adjustments |  | $ 738 |
MSC Mexico [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Ownership interest in subsidiary | 75.00% |  |
DECO Tool Supply Co. [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Acquisition date | Jul. 31, 2017 |  |
Purchase price | $ 43,083 |  |
Goodwill adjustments | $ 738 |  |
All Integrated Solutions ("AIS") [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Acquisition date | Apr. 30, 2018 |  |
Ownership interest in subsidiary |  | 100.00% |
Payments to acquire business |  | $ 87,848 |
Post-closing working capital adjustment paid out |  | 1,155 |
Goodwill adjustments |  | $ 1,155 |
TAC [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Acquisition date | Feb. 01, 2019 |  |
Number of subsidiaries involved in acquisition | entity | 2 |  |
Payments to acquire business | $ 13,911 |  |
Post-closing working capital adjustment payable | 2,286 |  |
Acquired intangible assets | $ 6,200 |  |
Acquired intangible assets useful life | 9 years |  |
Goodwill | $ 2,872 |  |
Revenue of acquiree | 23,159 |  |
Income of acquiree | (393) |  |
Integration and acquisition related expenses | $ 202 |  |

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