Geographic Information and Major Customer and Product Data - Long-lived Assets by Geographic Region (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Long-lived assets	$ 36,849	$ 36,338
Israel
Segment Reporting Information [Line Items]
Long-lived assets	18,859	18,354
United States
Segment Reporting Information [Line Items]
Long-lived assets	16,186	16,100
France
Segment Reporting Information [Line Items]
Long-lived assets	983	1,023
Other
Segment Reporting Information [Line Items]
Long-lived assets	$ 821	$ 861