Supplemental Information - Schedule of Long-Lived Assets by Location (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Revenues From External Customers And Long Lived Assets [Line Items]
Long-lived assets	$ 18,309	$ 18,620
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Long-lived assets	10,942	11,981
Switzerland
Revenues From External Customers And Long Lived Assets [Line Items]
Long-lived assets	5,057	4,346
Israel
Revenues From External Customers And Long Lived Assets [Line Items]
Long-lived assets	1,884	1,915
Others
Revenues From External Customers And Long Lived Assets [Line Items]
Long-lived assets	$ 426	$ 378