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Long-Term Debt and Notes Payable - Long-Term Debt and Notes Payable (Detail) (USD $)
In Thousands, unless otherwise specified
Jan. 31, 2015
Jan. 31, 2014
Debt Instrument [Line Items]    
Long-term debt gross $ 26,355us-gaap_LongTermDebt $ 22,200us-gaap_LongTermDebt
Long-term debt gross 26,355us-gaap_LongTermDebt 22,200us-gaap_LongTermDebt
Less current portion (3,218)us-gaap_LongTermDebtCurrent (75)us-gaap_LongTermDebtCurrent
Long-term debt 23,137us-gaap_LongTermDebtNoncurrent 22,125us-gaap_LongTermDebtNoncurrent
Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Long-term debt gross 17,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
22,000us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_CreditFacilityAxis
= us-gaap_RevolvingCreditFacilityMember
Term Credit Facility [Member]    
Debt Instrument [Line Items]    
Long-term debt gross 9,200us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_CreditFacilityAxis
= mind_TermCreditFacilityMember
 
Other Equipment Notes [Member]    
Debt Instrument [Line Items]    
Long-term debt gross $ 155us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_CreditFacilityAxis
= mind_OtherEquipmentNotesMember
$ 200us-gaap_DebtInstrumentCarryingAmount
/ us-gaap_CreditFacilityAxis
= mind_OtherEquipmentNotesMember