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Mergers and Acquisitions - Estimated Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Oct. 01, 2017 | Oct. 02, 2016 | Sep. 27, 2015
Business acquisition |  |  |
Goodwill | $ 740,886 | $ 717,988 | $ 601,379
Minimum | Existing customer contracts |  |  |
Business acquisition |  |  |
Useful life of intangible assets | 1 year |  |
Minimum | Trade names |  |  |
Business acquisition |  |  |
Useful life of intangible assets | 3 years |  |
Maximum | Existing customer contracts |  |  |
Business acquisition |  |  |
Useful life of intangible assets | 5 years |  |
Maximum | Trade names |  |  |
Business acquisition |  |  |
Useful life of intangible assets | 5 years |  |
Weighted average | Existing customer contracts |  |  |
Business acquisition |  |  |
Useful life of intangible assets | 3 years |  |
Coffey and INDUS |  |  |
Business acquisition |  |  |
Accounts receivable |  | 71,515 |
Other current assets |  | 18,869 |
Property and equipment |  | 14,218 |
Goodwill |  | 108,323 |
Backlog and trade name intangible assets |  | 29,445 |
Other assets |  | 747 |
Current liabilities |  | (78,311) |
Borrowings |  | (65,086) |
Other long-term liabilities |  | (4,885) |
Net assets acquired |  | $ 94,835 |

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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + 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 (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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