Annual report pursuant to Section 13 and 15(d)

Derivatives - Narrative (Details)

v2.4.1.9
Derivatives - Narrative (Details) (USD $)
12 Months Ended 0 Months Ended
Dec. 31, 2012
Mar. 23, 2012
Dec. 31, 2014
Dec. 31, 2013
Derivative [Line Items]        
Gains (Losses) on Extinguishment of Debt $ 8,451,000us-gaap_GainsLossesOnExtinguishmentOfDebt      
Derivative Fair Value of Derivative Instruments Amount Not Offset Against Collateral     0mtii_DerivativeFairValueOfDerivativeInstrumentsAmountNotOffsetAgainstCollateral 0mtii_DerivativeFairValueOfDerivativeInstrumentsAmountNotOffsetAgainstCollateral
Recurring        
Derivative [Line Items]        
Derivative Asset     1,123,000us-gaap_DerivativeAssets
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
[1] 2,495,000us-gaap_DerivativeAssets
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
[1]
Derivative Liability     5,780,000us-gaap_DerivativeLiabilities
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
2,013,000us-gaap_DerivativeLiabilities
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Recurring | Level 2        
Derivative [Line Items]        
Derivative Asset     1,123,000us-gaap_DerivativeAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
[1] 2,495,000us-gaap_DerivativeAssets
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
[1]
Derivative Liability     5,780,000us-gaap_DerivativeLiabilities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
2,013,000us-gaap_DerivativeLiabilities
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel2Member
/ us-gaap_FairValueByMeasurementFrequencyAxis
= us-gaap_FairValueMeasurementsRecurringMember
Interest Rate Swap | Cash flow hedge        
Derivative [Line Items]        
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net     7,297,000us-gaap_InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_InterestRateSwapMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_CashFlowHedgingMember
 
Not Designated as Hedging Instrument [Member]        
Derivative [Line Items]        
Payments for Derivative Instrument, Investing Activities 8,837,000us-gaap_PaymentsForDerivativeInstrumentInvestingActivities
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
     
Unrealized Gains on Derivatives 6,793,000mtii_UnrealizedGainsOnDerivatives
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
     
Monitronics International Inc and Subsidiaries | Not Designated as Hedging Instrument [Member]        
Derivative [Line Items]        
Gains (Losses) on Extinguishment of Debt   $ 8,451,000us-gaap_GainsLossesOnExtinguishmentOfDebt
/ us-gaap_HedgingDesignationAxis
= us-gaap_NondesignatedMember
/ dei_LegalEntityAxis
= mtii_MonitronicsInternationalIncAndSubsidiariesMember
   
[1] Included in Other assets, net on the consolidated balance sheets.