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Acquisitions (Intangible Assets Acquired) (Details) £ in Thousands, $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
May 01, 2017 USD ($) | Apr. 06, 2017 GBP (£) | Dec. 28, 2018 | Dec. 29, 2017
Jibe Consulting, Inc [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Amount | $ | $ 931 |  |  |
Jibe Consulting, Inc [Member] | Customer Base [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Amount | $ | 140 |  |  |
Useful Life (in years) |  |  |  | 5 years
Jibe Consulting, Inc [Member] | Customer Backlog [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Amount | $ | 325 |  |  |
Useful Life (in years) |  |  |  | 2 years
Jibe Consulting, Inc [Member] | Non-Compete [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Amount | $ | $ 466 |  |  |
Useful Life (in years) |  |  |  | 5 years
Aecus Limited [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Amount | £ |  | £ 1,515 |  |
Aecus Limited [Member] | Customer Base [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Amount | £ |  | 455 |  |
Useful Life (in years) |  |  | 5 years |
Aecus Limited [Member] | Customer Backlog [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Amount | £ |  | 52 |  |
Useful Life (in years) |  |  | 2 years |
Aecus Limited [Member] | Non-Compete [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Amount | £ |  | £ 1,008 |  |
Useful Life (in years) |  |  | 5 years |

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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