Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition - Disaggregated Revenue by Source (Details)

v3.8.0.1
Revenue Recognition - Disaggregated Revenue by Source (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Disaggregation of Revenue [Line Items]    
Total Net revenue $ 133,753 $ 141,200
Alarm monitoring revenue    
Disaggregation of Revenue [Line Items]    
Total Net revenue 124,840 136,891
Product and installation revenue    
Disaggregation of Revenue [Line Items]    
Total Net revenue 8,147 3,294
Other revenue    
Disaggregation of Revenue [Line Items]    
Total Net revenue $ 766 $ 1,015