Available-For-Sale Securities, Debt Maturity Term

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- Definition

Cash And Cash Equivalent Maximum Maturity

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- Definition

Discontinued Operation Gross Cash Proceeds Received From Sale Of Business

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- Definition

More Likely Than Not Threshold Recognition of Uncertain Tax Position

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No definition available.

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- Definition

Number Of Customer Accounting For More Than Ten Percent Of Accounts Receivable

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No definition available.

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- Definition

Number Of CustomersAccounting For More Than Ten Percent Of Revenue

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No definition available.

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- Definition

Percentage of revenue recognized upon completion contract method.

+ References

No definition available.

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- Definition

General revenue recognition period associated with service and maintenance agreements.

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No definition available.

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- Definition

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 720

-SubTopic 35

-Section 50

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- Definition

Additions made to capitalized computer software costs during the period.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

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- Definition

For each income statement presented, the amount charged to expense for write-downs of capitalized computer software costs to net realizable value.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 985

-SubTopic 20

-Section 50

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

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- Definition

Period the derivative contract is outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 830

-SubTopic 20

-Section 45

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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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-Publisher FASB

-Name Accounting Standards Codification

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-Subparagraph (e)

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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No definition available.

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- Definition

Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Reporting Unit

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- Definition

The net result for the period of deducting operating expenses from operating revenues.

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No definition available.

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- Definition

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

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-Publisher FASB

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	12 Months Ended			1 Months Ended
	Dec. 31, 2014 segment	Dec. 31, 2013 segment	Dec. 31, 2012	Mar. 05, 2013
Operating activities	(21,571,000)us-gaap_OperatingIncomeLoss	$ (23,024,000)us-gaap_OperatingIncomeLoss	$ (17,917,000)us-gaap_OperatingIncomeLoss
Cash and cash equivalents maximum maturity	3 months	3 months	3 months
Available-for-sale securities, maturity term	18 months
Revenue recognition period, associated with service and maintenance agreement	1 year
Percentage of revenue recognized upon completion contract method	100.00%
Number of reporting units	2us-gaap_NumberOfReportingUnits	1us-gaap_NumberOfReportingUnits
Goodwill, Impairment Loss	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss	0us-gaap_GoodwillImpairmentLoss
Capitalized Computer Software, Impairments	1,100,000
Foreign Currency Transaction Gain (Loss), before Tax	400,000	500,000	700,000
Advertising expense	200,000us-gaap_AdvertisingExpense	400,000us-gaap_AdvertisingExpense	500,000us-gaap_AdvertisingExpense
More Likely Than Not Threshold Recognition of Uncertain Tax Position	50.00%
Number of reportable segments	2us-gaap_NumberOfReportableSegments	1us-gaap_NumberOfReportableSegments
Reduction to Deferred Tax Assets, Unrecognized Tax Benefits, Tax Credit Carryforward from Prior Periods	0	100,000	0
Furniture and fixtures [Member]
Property, plant and equipment estimated useful life	5 years
Internal Use Software [Member]
Property, plant and equipment estimated useful life	3 years
Machinery and equipment [Member]
Property, plant and equipment estimated useful life	4 years
Leasehold Improvements [Member]
Property, plant and equipment estimated useful life	10 years
Property, plant and equipment leasehold improvements useful lives	shorter of the remaining useful lives of the assets, up to ten years, or the lease term of the respective assets
Forward Contracts [Member]
Derivative, Term of Contract	12 months
Forward Contracts [Member] \| Designated as Hedging Instrument [Member]
Derivative, Term of Contract	12 months
Software [Member]
Property, plant and equipment estimated useful life	3 years
Software Development [Member]
Internal use software development cost capitalized	100,000	1,400,000	800,000
Accounts Receivable [Member]
Number of significant customers for accounts receivable	0	0
Entity-wide revenue, major customer, revenue or accounts receivable percentage	10.00%	10.00%
Net Revenue [Member]
Entity-wide revenue, major customer, revenue or accounts receivable percentage	10.00%
Number Of Customers Accounting For More Than Ten Percent Of Revenue	0
Net Revenue [Member] \| Comcast [Member]
Entity-wide revenue, major customer, revenue or accounts receivable percentage	16.00%	12.00%	11.00%
Customer Concentration Risk [Member] \| Net Revenue [Member] \| Comcast [Member]
Entity-wide revenue, major customer, revenue or accounts receivable percentage	16.00%	12.00%	11.00%
HFC business [Member]
Gross proceeds from sale of cable access HFC business				46,000,000
HFC Restructuring [Member]
Operating activities	0
Deferred Tax Asset [Member] \| NOL and R&D Credit Carryforward [Member]
Reduction to Deferred Tax Assets, Unrecognized Tax Benefits, Tax Credit Carryforward from Prior Periods	1,600,000