Supplemental Information - Schedule of Long-Lived Assets by Location (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 17,026	$ 15,366	$ 18,067
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	8,896	8,289	10,372
Switzerland
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	3,067	2,513	5,114
Israel
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	2,753	2,236	2,081
Germany
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	729	1,054	190
Others
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	$ 1,581	$ 1,274	$ 310