Income Taxes Domestic and foreign components of (loss) income before income taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 03, 2017	Dec. 29, 2015	Dec. 30, 2014
Income Tax Examination [Line Items]
Domestic and foreign components of (loss) income before income taxes	$ (70,444)	$ (22,499)	$ 18,550
Domestic Tax Authority [Member]
Income Tax Examination [Line Items]
Domestic and foreign components of (loss) income before income taxes	(67,626)	(21,674)	18,586
Foreign Tax Authority [Member]
Income Tax Examination [Line Items]
Domestic and foreign components of (loss) income before income taxes	$ (2,818)	$ (825)	$ (36)

This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 20
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=51673353&loc=d3e41242-110953

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 10
-Article 5

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