Other Assets and Liabilities (Details 2) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Other Current And Long Term Liabilities [Line Items]
R&D tax credit financing short term	$ 0	$ 5,382
Provision for retirement indemnity short term	0	55
Other	133	235
Total Other current liabilities	$ 133	$ 5,672