Goodwill and Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Goodwill [Roll Forward]
Beginning Balance	$ 43,912us-gaap_Goodwill
Translation effect	(3,049)us-gaap_GoodwillTranslationAdjustments
Ending Balance	40,863us-gaap_Goodwill
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	10,718		10,276
Accumulated Amortization	(1,417)		(1,374)
Net Carrying Amount	9,301us-gaap_FiniteLivedIntangibleAssetsNet		8,902us-gaap_FiniteLivedIntangibleAssetsNet
Amortization expense	169us-gaap_AmortizationOfIntangibleAssets	66us-gaap_AmortizationOfIntangibleAssets
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Amortization expense for current intangible assets, for year one	829
Amortization expense for current intangible assets, for year two	985
Amortization expense for current intangible assets, for year three	985
Amortization expense for current intangible assets, for year four	985
Amortization expense for current intangible assets, for year five	985
Technology-based intangibles [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	7,856		8,228
Accumulated Amortization	(1,200)		(1,141)
Net Carrying Amount	6,656		7,087
Technology-based intangibles [Member] \| Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization Period	10 years		10 years
Technology-based intangibles [Member] \| Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization Period	20 years		20 years
Internal-use software [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,227		1,332
Accumulated Amortization	0		0
Net Carrying Amount	2,227		1,332
Internal-use software [Member] \| Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization Period	7 years		7 years
Customer related intangibles [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	635		716
Accumulated Amortization	(217)		(233)
Net Carrying Amount	$ 418		483
Customer related intangibles [Member] \| Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization Period	10 years		10 years
Customer related intangibles [Member] \| Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization Period	15 years		15 years

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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

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- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

+ 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 350

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-Section 45

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

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- Definition

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

+ References

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 of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References