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Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Jan. 03, 2015 | Dec. 28, 2013 | Dec. 29, 2012
Goodwill and Intangible Assets |  |  |
Goodwill impairment | $ 0 us-gaap_GoodwillImpairmentLoss | $ 0 us-gaap_GoodwillImpairmentLoss | $ 71,394 us-gaap_GoodwillImpairmentLoss
Changes in the carrying amount of goodwill |  |  |
Balance at the beginning of the period, gross | 153,466 us-gaap_GoodwillGross | 142,658 us-gaap_GoodwillGross |
Goodwill adjustments related to acquisitions | 1,797 us-gaap_GoodwillAcquiredDuringPeriod | 10,563 us-gaap_GoodwillAcquiredDuringPeriod |
Goodwill adjustments related to NeuCo |  | (63)us-gaap_GoodwillOtherChanges |
Effect of foreign currency translation | (1,067)us-gaap_GoodwillTranslationAdjustments | 308 us-gaap_GoodwillTranslationAdjustments |
Balance at the end of the period, gross | 154,196 us-gaap_GoodwillGross | 153,466 us-gaap_GoodwillGross | 142,658 us-gaap_GoodwillGross
Balance at the beginning of the period, Accumulated impairment losses | (71,893)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss | (71,893)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss |
Goodwill impairment | 0 us-gaap_GoodwillImpairmentLoss | 0 us-gaap_GoodwillImpairmentLoss | (71,394)us-gaap_GoodwillImpairmentLoss
Balance at the end of the period, Accumulated impairment losses | (71,893)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss | (71,893)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss | (71,893)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
Balance at the beginning of the period, net | 81,573 us-gaap_Goodwill | 70,765 us-gaap_Goodwill |
Balance at the end of the period, net | 82,303 us-gaap_Goodwill | 81,573 us-gaap_Goodwill | 70,765 us-gaap_Goodwill
Intangible assets impairment losses | $ 0 us-gaap_ImpairmentOfIntangibleAssetsFinitelived | $ 0 us-gaap_ImpairmentOfIntangibleAssetsFinitelived | $ 0 us-gaap_ImpairmentOfIntangibleAssetsFinitelived

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition Amount of other (increase) decrease of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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