Income Taxes (Details 4) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 38,800	$ 31,000
Excess tax benefits credited to additional paid-in capital	21	77
Uncertain tax positions	0
Interest or penalties related to uncertain tax positions	0
Net Current Deferred Tax Asset
Operating Loss Carryforwards [Line Items]
Reclassification adjustment	109
Net Current Deferred Tax Liability
Operating Loss Carryforwards [Line Items]
Reclassification adjustment	$ (80)
SWITZERLAND
Operating Loss Carryforwards [Line Items]
Term of net operating loss carryforward	7 years
U.S. Federal and State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 27,600	21,300
Research and development tax credit carryforwards	1,200	500
State
Operating Loss Carryforwards [Line Items]
Research and development tax credit carryforwards	200	200
Foreign
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 82,000	$ 145,000