Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Mar. 29, 2015	Sep. 27, 2015	Dec. 28, 2014
Goodwill and Intangible Assets Disclosure [Line Items]
Goodwill impairment loss		$ 0.6	$ 0.0
Minimum
Goodwill and Intangible Assets Disclosure [Line Items]
Discount rates utilized in discounted cash flows	11.50%
Maximum
Goodwill and Intangible Assets Disclosure [Line Items]
Discount rates utilized in discounted cash flows	14.00%