Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 13,059	$ 13,158
Accumulated Amortization	(9,489)	(9,171)
Net Carrying Value	3,570us-gaap_FiniteLivedIntangibleAssetsNet	3,987us-gaap_FiniteLivedIntangibleAssetsNet
Weighted Average Useful Life (in Years)	2 years 4 months 24 days
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	8,086	8,114
Accumulated Amortization	(5,918)	(5,666)
Net Carrying Value	2,168	2,448
Weighted Average Useful Life (in Years)	2 years 4 months 24 days	2 years 7 months 6 days
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,267	3,267
Accumulated Amortization	(2,431)	(2,367)
Net Carrying Value	836	900
Weighted Average Useful Life (in Years)	3 years 3 months 19 days	3 years 6 months
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,706	1,777
Accumulated Amortization	(1,140)	(1,138)
Net Carrying Value	$ 566	$ 639
Weighted Average Useful Life (in Years)	1 year 10 months 25 days	2 years 2 months 12 days

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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- Definition

Useful life of finite-lived intangible assets, 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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