Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Changes in unrecognized tax benefits
Unrecognized tax benefits, balance at the beginning of the period	$ 3,929	$ 4,998	$ 4,364
Additions based on tax positions related to current year	432	465	316
Additions based on tax positions related to prior years		58	318
Reductions for tax positions related to prior years	(751)	(1,592)
Unrecognized tax benefits, balance at the end of the period	3,610	3,929	4,998
Gross unrecognized tax benefits which would affect the effective tax rate if recognized	3,200	4,000	4,800
Decrease in gross unrecognized tax benefits	600	1,300
Reduction in unrecognized tax benefits due to foreign currency remeasurement	200	300
Gross increases in unrecognized tax benefits	400	500	600
Reasonably possible change in unrecognized tax position end in next twelve months
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	1,100
High end of range
Income Taxes
Interest in the provision for income taxes recognized	100	100	100
Accrual for the payment of interest related to unrecognized tax positions	$ 100	$ 100	$ 100

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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (d)
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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
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-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
-URI http://asc.fasb.org/extlink&oid=6527854

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Amount of decrease in unrecognized tax benefits resulting from foreign currency translation.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of interest expense accrued for an underpayment of income taxes.

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The net amount of all increases and decreases in unrecognized tax benefits for the period.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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