Summary of Significant Accounting Policies (Details)			1 Months Ended	9 Months Ended	12 Months Ended
	Jan. 14, 2015	Jan. 09, 2015 shares	Jan. 31, 2015 USD ($) shares	Sep. 30, 2015 USD ($) shares	Dec. 31, 2014 USD ($)
Reverse stock split ratio	0.022
Warrants outstanding				$ 0
Embedded derivatives outstanding				0
Cash and Cash Equivalents
Unrealized gains and losses on money market funds				0	$ 0
Restricted Cash
Restricted cash					255,000
Decrease in restricted cash				255,000
Inventories
Capitalized raw material costs				1,689,000	2,265,000
Deferred Initial Public Offering Costs
Deferred offering costs capitalized					2,608,000
Payments for deferred initial public offering costs					$ 1,848,000
Other offering expenses			$ 3,553,000
Convertible Preferred Stock
Reclassification from mezzanine equity to additional paid-in capital			$ 137,626,000	137,626,000
Pantheris
Inventories
Capitalized raw material costs				$ 300,000
Common Stock
Convertible Preferred Stock
Shares issued for convertible preferred stock | shares		6,967,925	6,967,925	6,967,925