Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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-Section S99

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-Subparagraph (SX 210.5-02.14)

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-Publisher SEC

-Name Regulation S-X (SX)

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- Definition

The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

+ References

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

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-Name Accounting Standards Codification

-Topic 230

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-Section 45

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

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-Section 50

-Paragraph 1

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

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-Section S99

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Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 26,309us-gaap_PropertyPlantAndEquipmentGross				$ 19,452us-gaap_PropertyPlantAndEquipmentGross				$ 26,309us-gaap_PropertyPlantAndEquipmentGross	$ 19,452us-gaap_PropertyPlantAndEquipmentGross
Accumulated depreciation	(7,788)				(4,621)				(7,788)	(4,621)
Property and equipment	18,521us-gaap_PropertyPlantAndEquipmentNet				14,831us-gaap_PropertyPlantAndEquipmentNet				18,521us-gaap_PropertyPlantAndEquipmentNet	14,831us-gaap_PropertyPlantAndEquipmentNet
Depreciation and amortization	961	1,092	1,031	999	900	809	624	638	4,083	2,971	1,697
Fixed Assets [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization									4,000	2,900	1,500
Computer hardware and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	13,370				8,917				13,370	8,917
Purchased software and licenses [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	5,759				3,501				5,759	3,501
Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,116				3,014				3,116	3,014
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,064				4,020				4,064	4,020
Assets acquired under capital leases [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross					$ 3,200					$ 3,200