Geographic Information and Major Customer and Product Data - Revenues Within Geographical Areas (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Revenue	$ 292,689	$ 254,190	$ 270,288
North America
Segment Reporting Information [Line Items]
Revenue	207,488	174,607	167,361
EMEA
Segment Reporting Information [Line Items]
Revenue	77,093	70,208	93,816
Rest of World
Segment Reporting Information [Line Items]
Revenue	$ 8,108	$ 9,375	$ 9,111