Selected Balance Sheet Information (Details 1) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 1,301	$ 1,301
Less: accumulated depreciation and amortization	(500)	(429)
Total	801	872
Computers and office equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	851	851
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	439	439
Software [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 11	$ 11