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Accumulated Other Comprehensive Loss - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income (loss), net	$ 1,900	$ 300	$ 18,100
Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Actuarial loss recognized in the statements of operations as a component of net periodic pension costs, net of tax	786	(289)	765
Unrecognized actuarial gain (loss) based on updated actuarial assumption included in other comprehensive income, net of tax	$ (2,927)	$ 699	$ (18,416)

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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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Amount after tax, before reclassification adjustments of other comprehensive income (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 55
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=66004921&loc=d3e1436-108581

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-Section 45
-Paragraph 14A
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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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-SubTopic 10
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Amount after tax of reclassification adjustments of other comprehensive income (loss).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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