Quarterly report pursuant to Section 13 or 15(d)

Security Networks Acquisition - Narrative (Details)

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Security Networks Acquisition - Narrative (Details) (USD $)
6 Months Ended 0 Months Ended 3 Months Ended 0 Months Ended 3 Months Ended 0 Months Ended
Jun. 30, 2014
Jun. 30, 2013
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
Jun. 30, 2014
Monitronics International Inc and Subsidiaries
Security Networks Acquisition
Aug. 16, 2013
9.125% Senior Notes due April 1, 2020
Security Networks Acquisition
Aug. 16, 2013
Term Loan Due March, 2018
Security Networks Acquisition
Aug. 16, 2013
9.868% Promissory Note to Ascent Capital due October 1, 2020
Security Networks Acquisition
Business Acquisition [Line Items]                    
Goodwill, Purchase Accounting Adjustments         $ 989,000          
Fair value of consideration       500,557,000            
Payments to Acquire Businesses, Gross       481,834,000            
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares           253,333        
Par value of shares issued as a consideration (in dollars per share) $ 0.01   $ 0.01     $ 0.01        
Equity Issued in Business Combination, Fair Value Disclosure           18,723,000        
Business Combination Consideration Post Closing Working Capital Adjustment       1,057,000            
Proceeds from long-term debt 75,200,000 62,100,000           175,000,000 225,000,000 100,000,000
Debt Instrument, Interest Rate, Stated Percentage               9.125%    
Valuation Allowance, Deferred Tax Asset, Change in Amount             $ (936,000)