Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Expected Subscriber Fees (Details)

v2.4.1.9
Summary of Significant Accounting Policies - Expected Subscriber Fees (Details) (Subscriber Accounts, USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Subscriber Accounts
 
Finite-Lived Intangible Assets [Line Items]  
2015 $ 217,469us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mtii_SubscriberAccountsMember
2016 182,768us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mtii_SubscriberAccountsMember
2017 153,602us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mtii_SubscriberAccountsMember
2018 129,063us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mtii_SubscriberAccountsMember
2019 $ 108,549us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= mtii_SubscriberAccountsMember