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Note 7 - Consolidation of Variable Interest Entity (Details Textual) - Milestone Education LLC [Member]	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	50.00%
Percentage of Revenue from Services Performed to Variable Interest Entity	72.00%	82.00%

X

- 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

X

- 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=108788376&loc=SL6759159-111685

+ Details

Name:	us-gaap_VariableInterestEntityOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

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