Annual report pursuant to Section 13 and 15(d)

Segment, Geographical and Other Revenue Information - Revenues (Details)

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Segment, Geographical and Other Revenue Information - Revenues (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Schedule of revenues by geographical area      
Revenues $ 68,458,000 $ 60,594,000 $ 50,024,000
Americas      
Schedule of revenues by geographical area      
Revenues 13,039,000 15,370,000 15,575,000
EMEA      
Schedule of revenues by geographical area      
Revenues 37,133,000 22,361,000 19,610,000
APAC      
Schedule of revenues by geographical area      
Revenues 18,286,000 22,863,000 $ 14,839,000
United States      
Schedule of revenues by geographical area      
Long-lived assets $ 6,282,000 $ 4,759,000