Quarterly report pursuant to Section 13 or 15(d)

Security Networks Acquisition - Narrative (Details)

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Security Networks Acquisition - Narrative (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
0 Months Ended 3 Months Ended 0 Months Ended 3 Months Ended
Sep. 30, 2014
Dec. 31, 2013
Aug. 16, 2013
Security Networks Acquisition
Jun. 30, 2014
Security Networks Acquisition
Aug. 16, 2013
Ascent Capital
Security Networks Acquisition
Common Class A
Sep. 30, 2013
Monitronics International Inc and Subsidiaries
Security Networks Acquisition
Aug. 16, 2013
Monitronics International Inc and Subsidiaries
Security Networks Acquisition
Business Acquisition [Line Items]              
Fair value of consideration     $ 500,557        
Cash paid for acquisition     481,834        
Equity issued for acquisition (in shares)         253,333    
Par value of shares issued as a consideration (in dollars per share) $ 0.01 $ 0.01     $ 0.01    
Equity issued for acquisition         18,723    
Post Closing Working Capital Adjustments     1,057        
Goodwill 527,502 527,502         177,289
Goodwill adjustment       989      
Change in deferred tax asset valuation allowance           $ (4,823)