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Acquisitions (Narrative) (Details) |  |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Mar. 27, 2019 EUR (€) | Mar. 27, 2019 USD ($) | Mar. 28, 2018 EUR (€) | Mar. 28, 2018 USD ($) | Dec. 04, 2017 USD ($) shares | Aug. 31, 2017 EUR (€) shares | Aug. 31, 2017 USD ($) shares | May 25, 2019 EUR (€) shares | May 25, 2019 USD ($) | May 26, 2018 entity | May 25, 2019 USD ($) shares
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of businesses acquired | entity |  |  |  |  |  |  |  |  |  | 2 |
Contingent consideration adjustment |  |  |  |  |  |  |  |  | $ (590,000) |  |
Taskforce [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Consideration paid |  |  |  |  |  |  | $ 13,377,000 |  |  |  |
Initial consideration |  |  |  |  |  | € 5,800,000 | 6,900,000 |  |  |  |
Discount rate |  |  |  |  |  |  |  |  |  |  | 0.110
Contingent consideration liability |  |  |  |  |  |  |  | € 2,000,000 |  |  | $ 2,200,000
Acquisition of business, cash paid |  |  |  |  |  |  | $ 4,384,000 |  |  |  |
Acquisition of business, shares issued | shares |  |  |  |  |  | 226,628 | 226,628 |  |  |  |
Taskforce [Member] | Contingent Consideration Due For Calendar Year 2017 [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, factor by which EBITDA is multiplied to calculate consideration payable |  |  |  |  |  |  |  | 610.00% |  |  | 610.00%
Contingent consideration, percentage payable to employees of the acquired business |  |  |  |  |  |  |  | 20.00% |  |  | 20.00%
Contingent consideration paid |  |  | € 2,100,000 | $ 2,600,000 |  |  |  |  |  |  |
Taskforce [Member] | Contingent Consideration Due For Calendar Year 2018 [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration paid | € 1,600,000 | $ 1,900,000 |  |  |  |  |  |  |  |  |
Taskforce [Member] | Contingent Consideration Due For Calendar Year 2019 [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration adjustment |  |  |  |  |  |  |  | € (523,000) | $ (590,000) |  |
Taskforce [Member] | Contingent Consideration Due For Calendar Years 2018 And 2019 [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Contingent consideration, factor by which EBITDA is multiplied to calculate consideration payable |  |  |  |  |  |  |  | 610.00% |  |  | 610.00%
Contingent consideration, percentage payable to employees of the acquired business |  |  |  |  |  |  |  | 15.00% |  |  | 15.00%
Accretive [Member] |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Consideration paid |  |  |  |  | $ 31,801,000 |  |  |  |  |  |
Contingent consideration liability |  |  |  |  |  |  |  |  |  |  | $ 100,000
Contingent consideration, shares | shares |  |  |  |  |  |  |  | 108,000 |  |  | 108,000
Acquisition of business, cash paid |  |  |  |  | $ 20,047,000 |  |  |  |  |  |
Acquisition of business, shares issued | shares |  |  |  |  | 1,072,474 |  |  |  |  |  |

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