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ACQUISITIONS (Aon Purchase Price Allocation) (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jan. 04, 2016 | Dec. 31, 2017 | Jan. 01, 2017 | Dec. 25, 2015
Business Acquisition [Line Items] |  |  |  |
Cash purchase price, net of working capital adjustment |  | $ 0 | $ 72,476 | $ 67,500
Goodwill |  | $ 226,694 | $ 224,223 | $ 268,495
Aon Hewitt |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Cash purchase price, net of working capital adjustment | $ 72,476 |  |  |
Accounts receivable | 12,272 |  |  |
Prepaid expenses, deposits and other current assets | 894 |  |  |
Intangible Assets | 35,300 |  |  |
Total assets acquired | 48,466 |  |  |
Accrued wages and benefits | 1,025 |  |  |
Other long-term liabilities | 456 |  |  |
Total liabilities assumed | 1,481 |  |  |
Net identifiable assets acquired | 46,985 |  |  |
Goodwill | $ 25,491 |  |  |
Goodwill, expected tax deductible amount, Period | 15 years |  |  |
Customer relationships | Aon Hewitt |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Intangible Assets | $ 34,900 |  |  |
Technologies | Aon Hewitt |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Intangible Assets | $ 400 |  |  |

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- Definition For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the fair value of the receivables acquired, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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