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Business Acquisitions Early Discovery, Additional Information (Details) - Early Discovery UK € in Millions, $ in Millions			12 Months Ended
	Apr. 01, 2015 USD ($)	Apr. 01, 2014 USD ($)	Dec. 27, 2014 USD ($)	Dec. 26, 2015 EUR (€)	Dec. 26, 2015 USD ($)
Business Acquisition [Line Items]
Percentage of voting interests acquired		100.00%
Purchase price		$ 191.8
Contingent consideration, liability		0.9
Contingent consideration, change in amount	$ (0.8)
Maximum contingent consideration				€ 5.0	$ 5.5
Total purchase price allocation		183.6
Cash acquired from business acquisition		8.2
Acquisition related adjustments			$ 5.3
Pro forma information, revenue of acquiree since acquisition date			71.4
Pro forma information, earnings or loss of acquiree since acquisition date			$ 1.8
Pro forma adjustments, acquisitions		$ 3.7

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- Definition

Acquisition, Purchase Price

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- Definition

Cash Acquired From Business Acquisition

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- Definition

Payments to Acquire Business, Net of Cash Acquired

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- Definition

Pro Forma Adjustments, Acquisitions - pro forma adjustments for amortization of intangibles assets and depreciation of fixed assets acquired in a business combination

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- Definition

Amount of direct costs of the business combination or disposition including legal, accounting, and other costs incurred to consummate the business acquisition or disposition.

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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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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

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- Definition

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479

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- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

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-Name Accounting Standards Codification
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Amount of liability recognized arising from contingent consideration in a business combination.

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- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
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- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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