XML 18 R55.htm IDEA: XBRL DOCUMENT v2.4.1.9

Restructuring and Related Charges - Additional Information (Detail) (USD $)	3 Months Ended		12 Months Ended
	Apr. 03, 2015	Mar. 28, 2014	Dec. 31, 2014	Dec. 31, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost	$ 44,000us-gaap_RestructuringAndRelatedCostIncurredCost	$ 228,000us-gaap_RestructuringAndRelatedCostIncurredCost
Harmonic Two Thousand And Fifteen Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	56,000us-gaap_BusinessExitCosts1 / us-gaap_RestructuringPlanAxis = hlit_HarmonicTwoThousandAndFifteenRestructuringMember		2,200,000us-gaap_BusinessExitCosts1 / us-gaap_RestructuringPlanAxis = hlit_HarmonicTwoThousandAndFifteenRestructuringMember
Harmonic 2013 Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Incurred Cost		200,000us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringPlanAxis = hlit_HarmonicTwoThousandAndThirteenRestructuringMember	900,000us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringPlanAxis = hlit_HarmonicTwoThousandAndThirteenRestructuringMember	2,200,000us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringPlanAxis = hlit_HarmonicTwoThousandAndThirteenRestructuringMember
Fixed Asset Impairment [Member] | Harmonic Two Thousand And Fifteen Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			1,100,000us-gaap_BusinessExitCosts1 / us-gaap_RestructuringCostAndReserveAxis = hlit_FixedAssetImpairmentMember / us-gaap_RestructuringPlanAxis = hlit_HarmonicTwoThousandAndFifteenRestructuringMember
Contract Termination [Member] | Harmonic Two Thousand And Fifteen Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges			300,000us-gaap_BusinessExitCosts1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_ContractTerminationMember / us-gaap_RestructuringPlanAxis = hlit_HarmonicTwoThousandAndFifteenRestructuringMember
Other Restructuring [Member] | Harmonic Two Thousand And Fifteen Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0us-gaap_BusinessExitCosts1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember / us-gaap_RestructuringPlanAxis = hlit_HarmonicTwoThousandAndFifteenRestructuringMember		100,000us-gaap_BusinessExitCosts1 / us-gaap_RestructuringCostAndReserveAxis = us-gaap_OtherRestructuringMember / us-gaap_RestructuringPlanAxis = hlit_HarmonicTwoThousandAndFifteenRestructuringMember
Employee Severance And Benefit Arrangements [Member] | Harmonic Two Thousand And Fifteen Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges	56,000us-gaap_BusinessExitCosts1 / us-gaap_RestructuringCostAndReserveAxis = hlit_EmployeeSeveranceAndBenefitArrangementsMember / us-gaap_RestructuringPlanAxis = hlit_HarmonicTwoThousandAndFifteenRestructuringMember		600,000us-gaap_BusinessExitCosts1 / us-gaap_RestructuringCostAndReserveAxis = hlit_EmployeeSeveranceAndBenefitArrangementsMember / us-gaap_RestructuringPlanAxis = hlit_HarmonicTwoThousandAndFifteenRestructuringMember
Number of positions eliminated	2us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated / us-gaap_RestructuringCostAndReserveAxis = hlit_EmployeeSeveranceAndBenefitArrangementsMember / us-gaap_RestructuringPlanAxis = hlit_HarmonicTwoThousandAndFifteenRestructuringMember		19us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated / us-gaap_RestructuringCostAndReserveAxis = hlit_EmployeeSeveranceAndBenefitArrangementsMember / us-gaap_RestructuringPlanAxis = hlit_HarmonicTwoThousandAndFifteenRestructuringMember
Restructuring and Related Cost, Incurred Cost	$ 44,000us-gaap_RestructuringAndRelatedCostIncurredCost / us-gaap_RestructuringCostAndReserveAxis = hlit_EmployeeSeveranceAndBenefitArrangementsMember / us-gaap_RestructuringPlanAxis = hlit_HarmonicTwoThousandAndFifteenRestructuringMember
Employee Severance And Benefit Arrangements [Member] | Harmonic 2013 Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Number of positions eliminated		8us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated / us-gaap_RestructuringCostAndReserveAxis = hlit_EmployeeSeveranceAndBenefitArrangementsMember / us-gaap_RestructuringPlanAxis = hlit_HarmonicTwoThousandAndThirteenRestructuringMember

X

- 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

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X

- Definition

Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the 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 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

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- Definition

The number of positions eliminated during the period as a result of restructuring activities.

+ References

No definition available.

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