Revenues - Additional Information (Details1) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disaggregation Of Revenue [Line Items]
Remaining performance obligation	$ 3,294
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-01-01
Disaggregation Of Revenue [Line Items]
Remaining performance obligation	$ 2,591
Remaining performance obligation, satisfaction period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2022-01-01
Disaggregation Of Revenue [Line Items]
Remaining performance obligation	$ 703
Remaining performance obligation, satisfaction period	1 year
Google [Member]
Disaggregation Of Revenue [Line Items]
Remaining performance obligation		$ 94
Google [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2021-01-01
Disaggregation Of Revenue [Line Items]
Remaining performance obligation	$ 6,850
Remaining performance obligation, satisfaction period	9 months