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Revenue - Schedule of Sales Commissions Contract Assets (Details)
$ in Thousands
 3 Months Ended
Mar. 31, 2020
USD ($)
Sales commissions contract assets beginning balance $ 138
Additions during the period 26
Amortization of sales commissions (19)
Sales commissions contract assets ending balance 145
Hardware [Member]  
Sales commissions contract assets beginning balance 101
Additions during the period 21
Amortization of sales commissions (14)
Sales commissions contract assets ending balance 108
Monitoring [Member]  
Sales commissions contract assets beginning balance 37
Additions during the period 5
Amortization of sales commissions (5)
Sales commissions contract assets ending balance $ 37