Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Disaggregated Revenue by Source (Details)

v3.19.1
Revenue Recognition - Disaggregated Revenue by Source (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Disaggregation of Revenue [Line Items]    
Total Net revenue $ 129,606 $ 133,753
Alarm monitoring revenue    
Disaggregation of Revenue [Line Items]    
Total Net revenue 121,479 124,840
Product and installation revenue    
Disaggregation of Revenue [Line Items]    
Total Net revenue 6,534 8,147
Other revenue    
Disaggregation of Revenue [Line Items]    
Total Net revenue $ 1,593 $ 766