Annual report pursuant to Section 13 and 15(d)

Restructuring Charges - Summary of Restructuring Charges (Details)

v2.4.1.9
Restructuring Charges - Summary of Restructuring Charges (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Restructuring and Related Activities [Abstract]      
Restructuring charges $ 952us-gaap_RestructuringCharges $ 1,111us-gaap_RestructuringCharges $ 0us-gaap_RestructuringCharges
Change in activity of restructuring reserves during the period      
Restructuring Charges 952us-gaap_RestructuringCharges 1,111us-gaap_RestructuringCharges 0us-gaap_RestructuringCharges
2013 Restructuring Plan | Severance and retention      
Restructuring and Related Activities [Abstract]      
Restructuring charges 952us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= mtii_EmployeeSeveranceAndRetentionMember
/ us-gaap_RestructuringPlanAxis
= mtii_SecurityNetworksRestructuringPlanMember
1,111us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= mtii_EmployeeSeveranceAndRetentionMember
/ us-gaap_RestructuringPlanAxis
= mtii_SecurityNetworksRestructuringPlanMember
 
Change in activity of restructuring reserves during the period      
Opening balance 1,570us-gaap_RestructuringReserve
/ us-gaap_RestructuringCostAndReserveAxis
= mtii_EmployeeSeveranceAndRetentionMember
/ us-gaap_RestructuringPlanAxis
= mtii_SecurityNetworksRestructuringPlanMember
0us-gaap_RestructuringReserve
/ us-gaap_RestructuringCostAndReserveAxis
= mtii_EmployeeSeveranceAndRetentionMember
/ us-gaap_RestructuringPlanAxis
= mtii_SecurityNetworksRestructuringPlanMember
 
Restructuring Charges 952us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= mtii_EmployeeSeveranceAndRetentionMember
/ us-gaap_RestructuringPlanAxis
= mtii_SecurityNetworksRestructuringPlanMember
1,111us-gaap_RestructuringCharges
/ us-gaap_RestructuringCostAndReserveAxis
= mtii_EmployeeSeveranceAndRetentionMember
/ us-gaap_RestructuringPlanAxis
= mtii_SecurityNetworksRestructuringPlanMember
 
Payments (2,388)us-gaap_PaymentsForRestructuring
/ us-gaap_RestructuringCostAndReserveAxis
= mtii_EmployeeSeveranceAndRetentionMember
/ us-gaap_RestructuringPlanAxis
= mtii_SecurityNetworksRestructuringPlanMember
(33)us-gaap_PaymentsForRestructuring
/ us-gaap_RestructuringCostAndReserveAxis
= mtii_EmployeeSeveranceAndRetentionMember
/ us-gaap_RestructuringPlanAxis
= mtii_SecurityNetworksRestructuringPlanMember
 
Other 0us-gaap_RestructuringReserveAccrualAdjustment
/ us-gaap_RestructuringCostAndReserveAxis
= mtii_EmployeeSeveranceAndRetentionMember
/ us-gaap_RestructuringPlanAxis
= mtii_SecurityNetworksRestructuringPlanMember
492us-gaap_RestructuringReserveAccrualAdjustment
/ us-gaap_RestructuringCostAndReserveAxis
= mtii_EmployeeSeveranceAndRetentionMember
/ us-gaap_RestructuringPlanAxis
= mtii_SecurityNetworksRestructuringPlanMember
[1]  
Ending balance $ 134us-gaap_RestructuringReserve
/ us-gaap_RestructuringCostAndReserveAxis
= mtii_EmployeeSeveranceAndRetentionMember
/ us-gaap_RestructuringPlanAxis
= mtii_SecurityNetworksRestructuringPlanMember
$ 1,570us-gaap_RestructuringReserve
/ us-gaap_RestructuringCostAndReserveAxis
= mtii_EmployeeSeveranceAndRetentionMember
/ us-gaap_RestructuringPlanAxis
= mtii_SecurityNetworksRestructuringPlanMember
 
[1] Amount was recorded upon the acquisition of Security Networks.