Balance Sheet Account Details Details - Property and Equipment - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 2,108	$ 311
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(376)	(32)
Property, Plant and Equipment, Net	1,732	279
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	389	91
Software and Software Development Costs [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	34	1
Lab Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	978	162
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	314	57
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 393	$ 0