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 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Disaggregation of Revenue [Line Items]        
Total Net revenue $ 135,013 $ 140,498 $ 268,766 $ 281,698
Alarm monitoring revenue        
Disaggregation of Revenue [Line Items]        
Total Net revenue 124,844 136,453 249,685 273,343
Product and installation revenue        
Disaggregation of Revenue [Line Items]        
Total Net revenue 9,477 3,136 17,624 6,430
Other revenue        
Disaggregation of Revenue [Line Items]        
Total Net revenue $ 692 $ 909 $ 1,457 $ 1,925