| Component: (Network and Table) | |
|---|---|
| Network | 2407402 - Disclosure - Goodwill and Intangible Assets, Net - Schedule of Goodwill (Details) (http://www.alarm.com/role/GoodwillAndIntangibleAssetsNetScheduleOfGoodwillDetails) |
| Table | Schedule of Goodwill [Table] |
| Reporting Entity [Axis] | 0001459200 (http://www.sec.gov/CIK) |
| Goodwill [Line Items] | Period [Axis] | |||||
|---|---|---|---|---|---|---|
2016-01-01 - 2016-12-31 | 2015-01-01 - 2015-12-31 | |||||
| Segments [Axis] | Segments [Axis] | |||||
| Alarm.com | Other | Segments [Domain] | Alarm.com | Other | Segments [Domain] | |
Goodwill [Roll Forward] | ||||||
Beginning balance | 24,723,000 | 21,374,000 | ||||
Goodwill acquired | ||||||
Ending balance | 24,723,000 | 24,723,000 | 0 | 24,723,000 | ||