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Revenue, Deferred Revenue and Prepaid Commissions - Additional Details (Details)
$ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
revenue_component
Segment Reporting Information [Line Items]  
Revenue recognized | $ $ 25.3
Remaining performance obligation | $ $ 50.6
Wireless  
Segment Reporting Information [Line Items]  
Revenue primary component | revenue_component 2
Operations revenue  
Segment Reporting Information [Line Items]  
Revenue primary component | revenue_component 2
Maintenance revenue  
Segment Reporting Information [Line Items]  
Typical duration of revenue recognition Maintenance revenue is for ongoing support of our software solutions or related equipment (typically for one year) and access to when-and-if available software updates.