XML 70 R94.htm IDEA: XBRL DOCUMENT v2.4.1.9
Special Charges - Additional Information (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Jan. 31, 2015
Jan. 31, 2014
Jan. 31, 2013
Special charges $ 23,490ment_SpecialCharges $ 16,929ment_SpecialCharges $ 9,946ment_SpecialCharges
Percentage of termination benefit paid 90.00%ment_PercentageOfTerminationBenefitPaid 80.00%ment_PercentageOfTerminationBenefitPaid 60.00%ment_PercentageOfTerminationBenefitPaid
Accrued special charges noncurrent 252ment_AccruedSpecialChargesNoncurrent 587ment_AccruedSpecialChargesNoncurrent 2,213ment_AccruedSpecialChargesNoncurrent
Accrued special charges current 4,265ment_AccruedSpecialChargesCurrent 7,259ment_AccruedSpecialChargesCurrent 3,328ment_AccruedSpecialChargesCurrent
Litigation Costs      
Special charges 18,408ment_SpecialCharges
/ us-gaap_RestructuringCostAndReserveAxis
= ment_LitigationCostsMember		 11,597ment_SpecialCharges
/ us-gaap_RestructuringCostAndReserveAxis
= ment_LitigationCostsMember		 3,632ment_SpecialCharges
/ us-gaap_RestructuringCostAndReserveAxis
= ment_LitigationCostsMember
Employee Severance      
Special charges 3,535ment_SpecialCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember		 4,392ment_SpecialCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember		 4,016ment_SpecialCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_EmployeeSeveranceMember
Other Restructuring      
Special charges $ 1,547ment_SpecialCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_OtherRestructuringMember		 $ 940ment_SpecialCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_OtherRestructuringMember		 $ 2,298ment_SpecialCharges
/ us-gaap_RestructuringCostAndReserveAxis
= us-gaap_OtherRestructuringMember