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Restructuring and Excess Facilities - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended | 3 Months Ended | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2008 Sunnyvale building [Member] | Dec. 31, 2010 Omneon Restructuring [Member] Excess Facilities [Member] | Dec. 31, 2013 Omneon Restructuring [Member] Excess Facilities [Member] | Dec. 31, 2012 Omneon Restructuring [Member] Excess Facilities [Member] | Dec. 31, 2011 Omneon Restructuring [Member] Excess Facilities [Member] | Dec. 31, 2013 HFC Restructuring [Member] Employee | Dec. 31, 2013 HFC Restructuring [Member] Severance [Member] | Dec. 31, 2013 HFC Restructuring [Member] Contract Termination [Member] | Dec. 31, 2013 Harmonic 2013 Restructuring [Member] Employee | Dec. 31, 2013 Harmonic 2013 Restructuring [Member] Cost of revenue [Member] | Dec. 31, 2013 Harmonic 2013 Restructuring [Member] Operating Expenses [Member] | Dec. 31, 2013 Harmonic 2013 Restructuring [Member] Inventory Valuation and Obsolescence [Member] | Dec. 31, 2013 Harmonic 2013 Restructuring [Member] Severance [Member] | Dec. 31, 2013 Harmonic 2013 Restructuring [Member] Leasehold Improvements [Member]
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease expiration date |  |  |  | 2010-09 |  |  |  |  |  |  |  |  |  |  |  |  |
Restructuring and related charges | $ 1,421 | $ 0 | $ 0 |  | $ 3,000 | $ 28 | $ 94 | $ 517 |  |  |  | $ 2,200 | $ 824 | $ 1,421 |  | $ 1,700 |
Restructuring charges |  |  |  |  |  |  |  |  | 600 | 505 | 95 |  |  |  |  |  |
Number of employees terminated |  |  |  |  |  |  |  |  | 9 |  |  | 85 |  |  |  |  |
Non-cash write-offs |  |  |  |  |  |  |  |  |  |  |  | 553 |  |  | 404 | 0 | 149
Number of employees terminated required to be hired |  |  |  |  |  |  |  |  | 10 |  |  |  |  |  |  |  |
Restructuring reserve |  |  |  |  | 2,862 | 0 | 869 | 2,593 | 13 | 13 | 0 | 179 |  |  | 0 | 179 | 0
Restructuring charges in continued operations |  |  |  |  |  |  |  |  |  |  |  | 2,168 |  |  | 404 | 1,663 | 101
Adjustments to restructuring provisions |  |  |  |  |  |  |  |  | $ 73 | $ 102 | $ (29) | $ 77 |  |  | $ 0 | $ 29 | $ 48

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- Definition Amount charged against earnings under Income from Discontinued Operations in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, including subsequent restructuring expenses adjustment and excluding asset retirement obligations. + References No definition available. + Details
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- Definition Lease Expiration Month And Year + References No definition available. + Details
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- Definition Number of employees terminated. + References No definition available. + Details
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- Definition Number Of Employees Terminated Required to be Hired + References No definition available. + Details
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, 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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- 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 Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + 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)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: 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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- Definition Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments. + 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 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 40 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394291&loc=d3e17658-110867 + Details
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