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.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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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.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of increase (decrease) to assets, excluding financial assets and goodwill, lacking physical substance with a finite life for foreign currency translation adjustments.

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Goodwill and Intangible Assets (Details 3) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 28, 2015	Jun. 29, 2014	Jun. 28, 2015	Jun. 29, 2014	Sep. 28, 2014
Finite-lived intangible assets
Gross Amount	$ 124,207		$ 124,207		$ 127,484
Accumulated Amortization	(75,010)		(75,010)		(64,389)
Foreign currency translation adjustments			2,800
Amortization expense for identifiable intangible assets	4,700	$ 6,100	15,500	$ 21,400
Estimated amortization expense
2015	4,852		4,852
2016	16,873		16,873
2017	14,273		14,273
2018	6,469		6,469
2019	3,252		3,252
Beyond	3,478		3,478
Total	49,197		$ 49,197
Non-compete agreements
Finite-lived intangible assets
Weighted-Average Remaining Life			1 year 3 months 18 days
Gross Amount	952		$ 952		1,086
Accumulated Amortization	(633)		$ (633)		(524)
Client relations
Finite-lived intangible assets
Weighted-Average Remaining Life			3 years 6 months
Gross Amount	118,325		$ 118,325		122,198
Accumulated Amortization	(71,068)		$ (71,068)		(61,117)
Backlog
Finite-lived intangible assets
Weighted-Average Remaining Life			9 months 18 days
Gross Amount	2,251		$ 2,251		1,283
Accumulated Amortization	(1,292)		$ (1,292)		(1,072)
Technology and trade names
Finite-lived intangible assets
Weighted-Average Remaining Life			1 year 6 months
Gross Amount	2,679		$ 2,679		2,917
Accumulated Amortization	$ (2,017)		$ (2,017)		$ (1,676)