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Note G - Consolidation of Variable Interest Entity (Details Textual) - Milestone Education LLC [Member] | 12 Months Ended
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Dec. 31, 2017
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage | 50.00%
Percentage of Revenue from Services Performed to Variable Interest Entity | 81.00%

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- Definition Percentage of revenue from services performed to variable interest entity. + References No definition available. + Details
Name: | mlss_PercentageOfRevenueFromServicesPerformedToVariableInterestEntity
Namespace Prefix: | mlss_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 5A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=77990344&loc=SL6759159-111685 + Details
Name: | us-gaap_VariableInterestEntityOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=mlss_MilestoneEducationLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |