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Seismic Equipment Lease Pool and Property and Equipment - Schedule of Seismic Equipment Lease Pool and Property and Equipment (Detail) (USD $) In Thousands, unless otherwise specified | Jan. 31, 2015 | Jan. 31, 2014 | Jan. 31, 2013
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Property, Plant and Equipment [Line Items] |  |  |
Cost of property and equipment | $ 10,487 us-gaap_PropertyPlantAndEquipmentGross | $ 10,040 us-gaap_PropertyPlantAndEquipmentGross |
Cost of seismic equipment lease pool and property and equipment | 253,698 mind_PropertyPlantAndEquipmentIncludingCostOfSeismicEquipmentGross | 271,684 mind_PropertyPlantAndEquipmentIncludingCostOfSeismicEquipmentGross |
Less accumulated depreciation | (153,611)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | (142,111)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment |
Seismic equipment lease pool and property and equipment, net | 100,087 us-gaap_PropertyPlantAndEquipmentNet | 129,573 us-gaap_PropertyPlantAndEquipmentNet | 119,608 us-gaap_PropertyPlantAndEquipmentNet
Channel Boxes [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Cost of property and equipment | 137,627 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = mind_ChannelBoxesMember | 148,004 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = mind_ChannelBoxesMember |
Peripheral Equipment [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Cost of property and equipment | 105,584 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = mind_PeripheralEquipmentMember | 113,640 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = mind_PeripheralEquipmentMember |
Seismic Equipment Lease Pool [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Cost of property and equipment | 243,211 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LeaseholdImprovementsMember | 261,644 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LeaseholdImprovementsMember |
Land and Buildings [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Cost of property and equipment | 366 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LandAndBuildingMember | 366 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_LandAndBuildingMember |
Furniture and Fixtures [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Cost of property and equipment | 9,399 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_FurnitureAndFixturesMember | 8,904 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = us-gaap_FurnitureAndFixturesMember |
Autos and Trucks [Member] |  |  |
Property, Plant and Equipment [Line Items] |  |  |
Cost of property and equipment | $ 722 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = mind_AutosAndTrucksMember | $ 770 us-gaap_PropertyPlantAndEquipmentGross / us-gaap_PropertyPlantAndEquipmentByTypeAxis = mind_AutosAndTrucksMember |

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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 14 -Article 5 + Details
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