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Restructuring - Textual (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 27, 2014 | Dec. 28, 2013 | Dec. 29, 2012
Restructuring (Textual) [Abstract] |  |  |
Restructuring charge | $ 2,266 us-gaap_RestructuringCharges | $ 1,740 us-gaap_RestructuringCharges | $ 0 us-gaap_RestructuringCharges
Payments for restructuring charges | 1,269 us-gaap_PaymentsForRestructuring | 844 us-gaap_PaymentsForRestructuring |
Non-cash acceleration of vesting of RSUs |  | 896 us-gaap_RestructuringReserveSettledWithoutCash1 |
Employee severance and benefits [Member] |  |  |
Restructuring (Textual) [Abstract] |  |  |
Restructuring charge | 1,016 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |  |
Payments for restructuring charges | 780 us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember | 844 us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |
Non-cash acceleration of vesting of RSUs |  | 896 us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |
Other [Member] |  |  |
Restructuring (Textual) [Abstract] |  |  |
Restructuring charge | 351 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember | 0 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember |
Payments for restructuring charges | 288 us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember | 0 us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember |
Non-cash acceleration of vesting of RSUs |  | 0 us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember |
Facility termination costs [Member] |  |  |
Restructuring (Textual) [Abstract] |  |  |
Restructuring charge | 899 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember | 0 us-gaap_RestructuringCharges / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember |
Payments for restructuring charges | 201 us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember | 0 us-gaap_PaymentsForRestructuring / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember |
Non-cash acceleration of vesting of RSUs |  | $ 0 us-gaap_RestructuringReserveSettledWithoutCash1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember |

X
- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Details
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- Definition Amount of consideration other than cash used to fully or partially settle an accrued restructuring cost. + References 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) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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- Details
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- Details
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