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Business Acquisitions - Sunrise, Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
	May. 05, 2015	Sep. 26, 2015	Sep. 26, 2015	Sep. 27, 2014
Business Acquisition [Line Items]
Gain on bargain purchase			$ 9,933	$ 0
Sunrise
Business Acquisition [Line Items]
Preliminary purchase price	$ 9,558
Gain on bargain purchase	9,933
Cash acquired	$ 100
Price allocation adjustment period, maximum	1 year
Transaction and integration costs		$ 100	$ 700
Client relationships | Sunrise
Business Acquisition [Line Items]
Useful life of intangible assets acquired			15 years

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- Definition

Business Acquisitions, Purchase Price Allocation, Period of Adjustment, Maximum

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Business Combination, Integration Related Costs and Transaction Costs

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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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In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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The cash inflow associated with the acquisition of a business when the cash held by the acquired business exceeds the cash payments to acquire the business.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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