Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Write-down of property and equipment held for sale	$ 289
Assets held for sale	216
Deferred offering costs
Offering costs offset against additional paid in capital	0	$ 0
Research and Development Caption [Member]
Write-down of property and equipment held for sale	$ 289
Computer equipment
Property and Equipment, Net
Depreciation period (in years)	3 years
Manufacturing equipment
Write-down of property and equipment held for sale	$ 289
Property and Equipment, Net
Depreciation period (in years)	5 years
Furniture and Fixtures [Member]
Property and Equipment, Net
Depreciation period (in years)	7 years