Property and Equipment (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended	12 Months Ended
Jan. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property, And Equipment
Total	$ 266us-gaap_PropertyPlantAndEquipmentGross	$ 266us-gaap_PropertyPlantAndEquipmentGross	$ 38us-gaap_PropertyPlantAndEquipmentGross
Less: accumulated depreciation	(32)	(31)	(6)
Property and equipment, net	234us-gaap_PropertyPlantAndEquipmentNet	235us-gaap_PropertyPlantAndEquipmentNet	32us-gaap_PropertyPlantAndEquipmentNet
Depreciation	1us-gaap_Depreciation	25us-gaap_Depreciation	5us-gaap_Depreciation
Furniture
Property, And Equipment
Total	18	18	11
Laboratory equipment
Property, And Equipment
Total	26	26	12
Computers and equipment
Property, And Equipment
Total	78	78	15
Software
Property, And Equipment
Total	$ 144	$ 144

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

+ References

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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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.14)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 14

-Article 5

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ 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)

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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

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

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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

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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-Publisher FASB

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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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