Summary of Business and Significant Accounting Policies - Recent Accounting Standards - ASU 2016-15 (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 30, 2016	Dec. 25, 2015	Dec. 31, 2014
Recent Accounting Standards
Acquisition related payments	$ 18,004		$ 87,607
Net cash provided by (used in) financing activities from continuing operations	178,068	$ (124,730)	$ (55,149)
Accounting Standards Update 2016-15 \| Proforma Adjustment
Recent Accounting Standards
Acquisition related payments	(15,900)
Net cash provided by (used in) financing activities from continuing operations	$ 15,900

Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 26
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3574-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3521-108585

Name:	us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration