Goodwill - Schedule of Goodwill (Details) - USD ($) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
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| Goodwill [Roll Forward] | ||||
| Beginning Balance | $ 563,549,000 | |||
| Goodwill impairment | $ (214,400,000) | $ 0 | (214,400,000) | $ 0 |
| Reporting unit reallocation | 0 | |||
| Ending Balance | 349,149,000 | 349,149,000 | ||
| MONI | ||||
| Goodwill [Roll Forward] | ||||
| Beginning Balance | 527,502,000 | |||
| Goodwill impairment | (214,400,000) | |||
| Reporting unit reallocation | (313,102,000) | |||
| Ending Balance | 0 | 0 | ||
| LiveWatch | ||||
| Goodwill [Roll Forward] | ||||
| Beginning Balance | 36,047,000 | |||
| Goodwill impairment | 0 | |||
| Reporting unit reallocation | (36,047,000) | |||
| Ending Balance | 0 | 0 | ||
| Brinks Home Security | ||||
| Goodwill [Roll Forward] | ||||
| Beginning Balance | 0 | |||
| Goodwill impairment | 0 | |||
| Reporting unit reallocation | 349,149,000 | |||
| Ending Balance | $ 349,149,000 | $ 349,149,000 | ||
| X | ||||||||||
- Definition Goodwill, Change In Goodwill Allocation No definition available.
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| X | ||||||||||
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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