Quarterly report pursuant to Section 13 or 15(d)

Restructuring Charges - Narrative (Details)

v2.4.1.9
Restructuring Charges - Narrative (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Restructuring Cost and Reserve [Line Items]    
Restructuring Charges $ 0us-gaap_RestructuringCharges $ 547us-gaap_RestructuringCharges
Severance and retention | 2013 Restructuring Plan    
Restructuring Cost and Reserve [Line Items]    
Restructuring Charges $ 0us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= mtii_EmployeeSeveranceAndRetentionMember
/ us-gaap_RestructuringPlanAxis
= mtii_SecurityNetworksRestructuringPlanMember
$ 547us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= mtii_EmployeeSeveranceAndRetentionMember
/ us-gaap_RestructuringPlanAxis
= mtii_SecurityNetworksRestructuringPlanMember