Note 7 - Patents - Summary of Patents (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Patents, cost	$ 1,377,863	$ 1,377,863
Patents, impairment	(1,059,966)	(1,048,614)
Patents, accumulated amortization	317,897	329,249
Foundation Intellectual Property Patents [Member]
Patents, cost	1,377,863	1,377,863
Patents, impairment	(1,059,966)	(1,048,614)
Patents, accumulated amortization	$ 317,897	$ 329,249

The accumulated amount of impairment loss recognized resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value.

No definition available.

+ Details

Name:	mlss_FinitelivedIntangibleAssetsAccumulatedImpairment
Namespace Prefix:	mlss_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

+ Details

Name:	us-gaap_FiniteLivedIntangibleAssetsGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=mlss_FoundationIntellectualPropertyPatentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: