Annual report pursuant to Section 13 and 15(d)

Long-Term Debt - Narrative (Details)

v2.4.1.9
Long-Term Debt - Narrative (Details) (USD $)
12 Months Ended 0 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Aug. 16, 2013
Jul. 17, 2013
Mar. 23, 2012
Debt Instrument [Line Items]            
Proceeds from long-term debt $ 169,000,000us-gaap_ProceedsFromIssuanceOfLongTermDebt $ 630,575,000us-gaap_ProceedsFromIssuanceOfLongTermDebt $ 1,277,900,000us-gaap_ProceedsFromIssuanceOfLongTermDebt      
Remaining borrowing on line of credit 154,500,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity          
Deferred Finance Costs, Net 20,918,000us-gaap_DeferredFinanceCostsNet          
9.125% Senior Notes due April 1, 2020 | Senior Notes 9.125 Percent Due 2020            
Debt Instrument [Line Items]            
Debt issue amount 585,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mtii_SeniorNotes9.125PercentDue2020Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
      175,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mtii_SeniorNotes9.125PercentDue2020Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
410,000,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mtii_SeniorNotes9.125PercentDue2020Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
Debt interest rate 9.125%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mtii_SeniorNotes9.125PercentDue2020Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
      9.125%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mtii_SeniorNotes9.125PercentDue2020Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_SeniorNotesMember
 
Promissory Note | 9.868% Promissory Note to Ascent Capital due October 1, 2020            
Debt Instrument [Line Items]            
Debt interest rate 9.868%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mtii_PromissoryNoteDueOctober2020Member
/ us-gaap_LongtermDebtTypeAxis
= mtii_PromissoryNoteMember
         
Revolving Credit Facility | Revolving Credit Facility Due 2017            
Debt Instrument [Line Items]            
Line of credit borrowing capacity       225,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= mtii_RevolvingCreditFacilityDue2017Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
   
Basis spread on variable debt       3.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= mtii_RevolvingCreditFacilityDue2017Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
   
Floor on variable debt       1.00%mtii_DebtInstrumentFloorOfVariableRateBasis
/ us-gaap_DebtInstrumentAxis
= mtii_RevolvingCreditFacilityDue2017Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
   
Unused capacity fee for line of credit       0.50%us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
/ us-gaap_DebtInstrumentAxis
= mtii_RevolvingCreditFacilityDue2017Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
   
Term Loan | Term Loan Due March, 2018            
Debt Instrument [Line Items]            
Basis spread on variable debt       3.25%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_DebtInstrumentAxis
= mtii_TermLoanDueMarch2018Member
/ us-gaap_LongtermDebtTypeAxis
= mtii_TermLoanMember
   
Floor on variable debt       1.00%mtii_DebtInstrumentFloorOfVariableRateBasis
/ us-gaap_DebtInstrumentAxis
= mtii_TermLoanDueMarch2018Member
/ us-gaap_LongtermDebtTypeAxis
= mtii_TermLoanMember
   
Periodic payments for line of credit       2,292,000us-gaap_LineOfCreditFacilityPeriodicPaymentPrincipal
/ us-gaap_DebtInstrumentAxis
= mtii_TermLoanDueMarch2018Member
/ us-gaap_LongtermDebtTypeAxis
= mtii_TermLoanMember
   
Security Networks Acquisition | Revolving Credit Facility | Revolving Credit Facility Due 2017            
Debt Instrument [Line Items]            
Increase in borrowing capacity of credit line       75,000,000mtii_LineOfCreditFacilityIncreaseInMaximumBorrowingCapacity
/ us-gaap_BusinessAcquisitionAxis
= mtii_SecurityNetworksLLCAndCertainAffiliatedEntitiesMember
/ us-gaap_DebtInstrumentAxis
= mtii_RevolvingCreditFacilityDue2017Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
   
Discount rate on line of credit       0.50%mtii_LineOfCreditFacilityDiscountRate
/ us-gaap_BusinessAcquisitionAxis
= mtii_SecurityNetworksLLCAndCertainAffiliatedEntitiesMember
/ us-gaap_DebtInstrumentAxis
= mtii_RevolvingCreditFacilityDue2017Member
/ us-gaap_LongtermDebtTypeAxis
= us-gaap_RevolvingCreditFacilityMember
   
Ascent Capital | Promissory Note | 9.868% Promissory Note to Ascent Capital due October 1, 2020            
Debt Instrument [Line Items]            
Debt interest rate       9.868%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= mtii_PromissoryNoteDueOctober2020Member
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= mtii_PromissoryNoteMember
   
Ascent Capital | Security Networks Acquisition | Promissory Note | 9.868% Promissory Note to Ascent Capital due October 1, 2020            
Debt Instrument [Line Items]            
Proceeds from long-term debt       $ 100,000,000us-gaap_ProceedsFromIssuanceOfLongTermDebt
/ us-gaap_BusinessAcquisitionAxis
= mtii_SecurityNetworksLLCAndCertainAffiliatedEntitiesMember
/ us-gaap_DebtInstrumentAxis
= mtii_PromissoryNoteDueOctober2020Member
/ dei_LegalEntityAxis
= us-gaap_ParentCompanyMember
/ us-gaap_LongtermDebtTypeAxis
= mtii_PromissoryNoteMember
   
Interest Rate Swap | Designated as Hedging Instrument | Term Loan            
Debt Instrument [Line Items]            
Fixed Rate Paid 5.06%us-gaap_DerivativeFixedInterestRate
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
/ us-gaap_LongtermDebtTypeAxis
= mtii_TermLoanMember