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Mergers and Acquisitions - Estimated Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Apr. 02, 2017 | Oct. 02, 2016
Estimated fair values of the assets acquired and liabilities assumed |  |
Goodwill | $ 721,762 | $ 717,988
Coffey and INDUS |  |
Estimated fair values of the assets acquired and liabilities assumed |  |
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
Coffey and INDUS | Existing customer contracts | Minimum |  |
Estimated fair values of the assets acquired and liabilities assumed |  |
Useful life of intangible assets | 1 year |
Coffey and INDUS | Existing customer contracts | Maximum |  |
Estimated fair values of the assets acquired and liabilities assumed |  |
Useful life of intangible assets | 5 years |
Coffey and INDUS | Existing customer contracts | Weighted average |  |
Estimated fair values of the assets acquired and liabilities assumed |  |
Useful life of intangible assets | 3 years |
Coffey and INDUS | Trade names | Minimum |  |
Estimated fair values of the assets acquired and liabilities assumed |  |
Useful life of intangible assets | 3 years |
Coffey and INDUS | Trade names | Maximum |  |
Estimated fair values of the assets acquired and liabilities assumed |  |
Useful life of intangible assets | 5 years |

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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=56956791&loc=d3e4845-128472 + Details
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