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Accounts Receivables - Additional Information (Detail) $ in Millions | 12 Months Ended
--- | ---
Jan. 31, 2020 USD ($) Customer | Jan. 31, 2019 USD ($) Customer
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] |  |
Number of customers due | Customer | 2 | 3
Contracts receivable | $ | $ 1.9 | $ 3.0
Contracts receivable, interest rate | 2.50% | 3.60%
Minimum |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] |  |
Contracts receivable repayment term | 0 months |
Maximum |  |
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items] |  |
Contracts receivable repayment term | 18 months |

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- Definition Contract Receivable Gross + References No definition available. + Details
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Namespace Prefix: | mind_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Contracts receivable repayment term. + References No definition available. + Details
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- Definition Number of customers. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The weighted average interest rate charged on contract receivables maturing after one year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 910 -SubTopic 310 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118388040&loc=d3e49354-109356 + Details
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- Details
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- Details
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Balance Type: |
Period Type: |