Selected Balance Sheet Information (Details 2) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Accrued Expenses [Line Items]
Accrued manufacturing costs	$ 191	$ 0
Accrued vendor payments	341	133
Accrued clinical consulting services	935	164
Other accrued expenses	23	0
Total	$ 1,490	$ 297