Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Disaggregated Revenue by Source (Details)

v3.10.0.1
Revenue Recognition - Disaggregated Revenue by Source (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Disaggregation of Revenue [Line Items]        
Total Net revenue $ 137,156 $ 138,211 $ 405,922 $ 419,909
Alarm monitoring revenue        
Disaggregation of Revenue [Line Items]        
Total Net revenue 125,004 134,317 374,689 407,660
Product and installation revenue        
Disaggregation of Revenue [Line Items]        
Total Net revenue 11,360 2,899 28,984 9,328
Other revenue        
Disaggregation of Revenue [Line Items]        
Total Net revenue $ 792 $ 995 $ 2,249 $ 2,921