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Restructuring and Related Charges (Tables) | 9 Months Ended
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Sep. 28, 2018
Restructuring Cost and Reserve [Line Items] |
Schedule of Restructuring Reserve by Type of Cost | The following table summarizes the activities related to the Company’s restructuring plans during the nine months ended September 28, 2018 (in thousands):
| Harmonic 2016 Restructuring Plan |  | Harmonic 2017 Restructuring Plan |  | Harmonic 2018 Restructuring Plan |
| Excess facilities |  | TVN VDP |  | Excess facilities |  | Severance and benefits |  | Excess facilities |  | Severance and benefits |  | Total
Balance at December 31, 2017 | $ | 2,426 |  |  | $ | 5,128 |  |  | $ | 296 |  |  | $ | 193 |  |  | $ | — |  |  | $ | — |  |  | $ | 8,043 |
Charges for current period | — |  |  | — |  |  | — |  |  | — |  |  | 932 |  |  | 2,124 |  |  | 3,056 |
Adjustments to restructuring provisions | 99 |  |  | 504 |  |  | — |  |  | — |  |  | 1 |  |  | (72 | ) |  | 532 |
Reclassification of deferred rent | — |  |  | — |  |  | — |  |  | — |  |  | 332 |  |  | — |  |  | 332 |
Cash payments | (755 | ) |  | (2,363 | ) |  | (109 | ) |  | (193 | ) |  | (51 | ) |  | (2,046 | ) |  | (5,517 | )
Foreign exchange effect | — |  |  | (81 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | (81 | )
Balance at September 28, 2018 | $ | 1,770 |  |  | $ | 3,188 |  |  | $ | 187 |  |  | $ | — |  |  | $ | 1,214 |  |  | $ | 6 |  |  | $ | 6,365 |
Summary of restructuring activities | The following table summarizes the restructuring and related charges (in thousands):
| Three months ended | Nine months ended
| September 28, 2018 |  | September 29, 2017 | September 28, 2018 |  | September 29, 2017
Restructuring and related charges in: |  |  |  |  |  |
Cost of revenue | $ | 7 |  |  | $ | 549 |  | $ | 884 |  |  | $ | 1,335 |
Operating expenses - Restructuring and related charges | 987 |  |  | 2,028 |  | 2,704 |  |  | 4,084 |
Total restructuring and related charges | $ | 994 |  |  | $ | 2,577 |  | $ | 3,588 |  |  | $ | 5,419 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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=115931487&loc=d3e140864-122747 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747 + Details
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- Definition Tabular disclosure of an entity's restructuring reserve that occurred during the period associated with the exit from or disposal of business activities or restructurings for each major type of cost. This element may also include a description of any reversal and other adjustment made during the period to the amount of an accrued liability for restructuring activities. This element may be used to encapsulate the roll forward presentations of an entity's restructuring reserve by type of cost and in total, and explanation of changes that occurred in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 2: http://fasb.org/us-gaap/role/ref/legacyRef -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=115931487&loc=d3e140904-122747 + Details
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