Reorganization and Reorganization Costs G&A Realignment Accrual Rollforward - November 2014 Plan (Details) - G&A Realignment - November 2014 Plan - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Jan. 01, 2017	Jan. 03, 2016
Restructuring Cost and Reserve
Beginning balance	$ 232	$ 3,575
Charges		692	$ 4,718
Payments		(4,035)
Ending balance	0	232	3,575
Employee Severance
Restructuring Cost and Reserve
Beginning balance	232	3,431
Charges		(344)	3,011
Payments		(2,855)
Ending balance		232	3,431
Recruitment and relocation
Restructuring Cost and Reserve
Beginning balance	0	144
Charges		992	1,658
Payments		(1,136)
Ending balance		0	144
Other Restructuring
Restructuring Cost and Reserve
Beginning balance	$ 0	0
Charges		44	49
Payments		(44)
Ending balance		$ 0	$ 0

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
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No definition available.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
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