Deferred Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Recognition of deferred revenues	$ 550	$ 732
Minimum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Service period of the performance obligations	5 months
Maximum
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Service period of the performance obligations	27 months