Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Narrative (Details)

v2.4.1.9
Long-Term Debt - Narrative (Details) (USD $)
3 Months Ended 0 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 30, 2015
Feb. 17, 2015
Aug. 16, 2013
Jul. 17, 2013
Debt Instrument [Line Items]            
Proceeds from long-term debt $ 91,400,000us-gaap_ProceedsFromIssuanceOfLongTermDebt $ 42,900,000us-gaap_ProceedsFromIssuanceOfLongTermDebt        
Remaining borrowing on line of credit 184,700,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity          
Deferred Finance Costs, Net 20,292,000us-gaap_DeferredFinanceCostsNet          
Senior Notes | 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
         
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
Interest Payable 26,691,000us-gaap_InterestPayableCurrentAndNoncurrent
/ 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
      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]            
Increase in borrowing capacity of credit line       90,000,000mtii_LineOfCreditFacilityIncreaseInMaximumBorrowingCapacity
/ 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
 
Proceeds from Lines of Credit     33,000,000us-gaap_ProceedsFromLinesOfCredit
/ 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 | 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
/ us-gaap_LongtermDebtTypeAxis
= mtii_PromissoryNoteMember
 
Interest Rate Swap | Designated as Hedging Instrument | Term Loan            
Debt Instrument [Line Items]            
Rate Paid 5.06%us-gaap_DerivativeFixedInterestRate
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_HedgingDesignationAxis
= us-gaap_DesignatedAsHedgingInstrumentMember
/ us-gaap_LongtermDebtTypeAxis
= mtii_TermLoanMember