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Restructuring and Related Activities (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jul. 04, 2015 | Jun. 28, 2014 | Jul. 04, 2015 | Jun. 28, 2014 | Dec. 31, 2014 | Dec. 31, 2013
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Restructuring and severance costs | $ 5,660 | $ 9,014 | $ 7,070 | $ 15,418 |  |
Expected Restructuring Costs | 32,000 |  | 32,000 |  |  |
Global Cost Reduction Program [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Reserve, Current | 4,701 |  | 4,701 |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Restructuring and severance costs | $ 4,701 | 0 | 4,701 | 0 |  |
Cash paid |  |  | 0 |  |  |
Term of restructuring program | 30 months |  |  |  |  |
Expected Restructuring Costs | $ 30,000 |  | 30,000 |  |  |
MOSFETs Enhanced Competitiveness Program [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Reserve, Current | 9,123 |  | 9,123 |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Restructuring and severance costs | 939 | 1,492 | 2,292 | 3,219 | $ 6,025 | $ 2,328
Cash paid |  |  | (399) |  | (856) | (267)
Balance at end of period | $ 9,123 |  | 9,123 |  | 7,230 | 2,061
Balance at beginning of period |  |  | 7,230 | 2,061 | 2,061 |
Term of restructuring program | 2 years |  |  |  |  |
Expected Restructuring Costs | $ 16,000 |  | 16,000 |  |  |
Voluntary Separation/Retirement Program [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Reserve, Current | 2,449 |  | 2,449 |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Restructuring and severance costs | 20 | 7,522 | 77 | 12,199 | 12,792 | 486
Cash paid |  |  | (2,058) |  | (8,054) | (98)
Foreign currency translation |  |  | (244) |  | (455) | 3
Balance at end of period | 2,449 |  | 2,449 |  | 4,674 | $ 391
Balance at beginning of period |  |  | 4,674 | 391 | 391 |
Modules Product Transfer [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring Reserve, Current | 821 |  | 821 |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |
Restructuring and severance costs | 0 | $ 0 | 0 | $ 0 | 2,080 |
Cash paid |  |  | (563) |  | (464) |
Foreign currency translation |  |  | (111) |  | (121) |
Balance at end of period | $ 821 |  | 821 |  | $ 1,495 |
Balance at beginning of period |  |  | $ 1,495 |  |  |

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- Definition Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset. + 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 4 + Details
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- Definition Amount of foreign currency translation adjustment increasing or decreasing the accrual for a specified type of restructuring cost. + References Reference 1: 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 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)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: 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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