XML 26 R50.htm IDEA: XBRL DOCUMENT v2.4.1.9

Goodwill and Identified Intangible Assets - Changes in Carrying Amount of Goodwill (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Apr. 03, 2015
Goodwill [Line Items]
Balance at beginning of period	$ 197,884us-gaap_Goodwill
Foreign currency translation adjustment	(108)us-gaap_GoodwillTranslationAdjustments
Balance at end of period	197,776us-gaap_Goodwill
Video [Member]
Goodwill [Line Items]
Balance at beginning of period	136,975us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hlit_VideoMember
Foreign currency translation adjustment	(75)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = hlit_VideoMember
Balance at end of period	136,900us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hlit_VideoMember
Cable Edge [Member]
Goodwill [Line Items]
Balance at beginning of period	60,909us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hlit_CableEdgeMember
Foreign currency translation adjustment	(33)us-gaap_GoodwillTranslationAdjustments / us-gaap_StatementBusinessSegmentsAxis = hlit_CableEdgeMember
Balance at end of period	$ 60,876us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = hlit_CableEdgeMember

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

+ Details

Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_GoodwillLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

+ Details

Name:	us-gaap_GoodwillTranslationAdjustments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=hlit_CableEdgeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=hlit_VideoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: