Segment Information (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) segment	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Segment Reporting [Abstract]
Number of reportable segments \| segment			2
Segment Reporting Information [Line Items]
Revenue	$ 85,988	$ 64,423	$ 160,182	$ 123,466
Operating income	5,896	2,808	10,381	7,069
Total Assets	356,241		356,241		$ 261,245
Operating Segments \| Alarm.com
Segment Reporting Information [Line Items]
Revenue	81,338	61,775	151,850	117,785
Operating income	8,819	4,376	15,403	11,243
Total Assets	337,159		337,159		246,798
Operating Segments \| Other
Segment Reporting Information [Line Items]
Revenue	5,435	4,088	9,887	7,935
Operating income	(2,994)	(1,552)	(5,207)	(4,235)
Total Assets	19,082		19,082		14,447
Intersegment Eliminations \| Alarm.com
Segment Reporting Information [Line Items]
Revenue	(497)	(754)	(1,145)	(1,340)
Operating income	(39)	(79)	(60)	(126)
Total Assets	0		0		0
Intersegment Eliminations \| Other
Segment Reporting Information [Line Items]
Revenue	(288)	(686)	(410)	(914)
Operating income	110	$ 63	245	$ 187
Total Assets	$ 0		$ 0		$ 0
Segment Concentration Risk \| Revenue \| Alarm.com
Segment Reporting Information [Line Items]
Concentration risk percentage	94.00%	95.00%	95.00%	95.00%

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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