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Goodwill and Intangible Assets - Intangible Assets, Net (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2015 | Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | $ 96,597 us-gaap_FiniteLivedIntangibleAssetsGross | $ 96,495 us-gaap_FiniteLivedIntangibleAssetsGross
Finite-Lived Intangible Assets, Accumulated Amortization | (15,318)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | (13,828)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Total intangibles assets, net carrying amount | 81,279 us-gaap_FiniteLivedIntangibleAssetsNet | 82,667 us-gaap_FiniteLivedIntangibleAssetsNet
Customer Relationships [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 60,150 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | 60,150 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Finite-Lived Intangible Assets, Accumulated Amortization | (8,804)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | (7,919)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Total intangibles assets, net carrying amount | 51,346 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember | 52,231 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_CustomerRelationshipsMember
Acquired Technology [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 27,580 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember | 27,580 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember
Finite-Lived Intangible Assets, Accumulated Amortization | (4,435)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember | (4,068)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember
Total intangibles assets, net carrying amount | 23,145 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember | 23,512 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TechnologyBasedIntangibleAssetsMember
Trade Names [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 7,110 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember | 7,110 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember
Finite-Lived Intangible Assets, Accumulated Amortization | (1,777)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember | (1,576)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember
Total intangibles assets, net carrying amount | 5,333 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember | 5,534 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_TradeNamesMember
Patents [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Finite-Lived Intangible Assets, Gross | 1,757 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember | 1,655 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember
Finite-Lived Intangible Assets, Accumulated Amortization | (302)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember | (265)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember
Total intangibles assets, net carrying amount | $ 1,455 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember | $ 1,390 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_PatentsMember
Useful Life | 20 years | 20 years
Maximum [Member] | Customer Relationships [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 30 years | 30 years
Maximum [Member] | Acquired Technology [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 20 years | 20 years
Maximum [Member] | Trade Names [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 12 years | 12 years
Minimum [Member] | Customer Relationships [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 5 years | 5 years
Minimum [Member] | Acquired Technology [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 3 years | 3 years
Minimum [Member] | Trade Names [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Useful Life | 1 year | 3 years

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