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Note 8 - Stockholders' Equity - Assumption Used to Value Liability Classified Warrants at Grant Date (Details)	9 Months Ended
	Sep. 30, 2019 $ / shares shares
Number of shares underlying warrants granted (in shares) | shares	1,749,171
The 2016 Warrants [Member]
Number of shares underlying warrants granted (in shares) | shares	1,512,067
The 2019 Warrants [Member]
Number of shares underlying warrants granted (in shares) | shares	1,691,421
Measurement Input, Share Price [Member] | The 2019 Warrants [Member]
Warrants, measurement input	0.33
Measurement Input, Share Price [Member] | Warrant Liabilities [Member] | The 2016 Warrants [Member]
Warrants, measurement input	0.83
Measurement Input, Share Price [Member] | Warrant Liabilities [Member] | The 2019 Warrants [Member]
Warrants, measurement input	0.08
Measurement Input, Expected Term [Member] | The 2019 Warrants [Member]
Warrants, measurement input	4.9
Measurement Input, Expected Term [Member] | Warrant Liabilities [Member] | The 2016 Warrants [Member]
Warrants, measurement input	0.2
Measurement Input, Expected Term [Member] | Warrant Liabilities [Member] | The 2019 Warrants [Member]
Warrants, measurement input	4.4
Measurement Input, Price Volatility [Member] | The 2019 Warrants [Member]
Warrants, measurement input	0.83
Measurement Input, Price Volatility [Member] | Warrant Liabilities [Member] | The 2016 Warrants [Member]
Warrants, measurement input	0.86
Measurement Input, Price Volatility [Member] | Warrant Liabilities [Member] | The 2019 Warrants [Member]
Warrants, measurement input	0.86
Measurement Input, Expected Dividend Rate [Member] | The 2016 Warrants [Member]
Warrants, measurement input	0
Measurement Input, Expected Dividend Rate [Member] | The 2019 Warrants [Member]
Warrants, measurement input	0
Measurement Input, Expected Dividend Rate [Member] | Warrant Liabilities [Member] | The 2016 Warrants [Member]
Warrants, measurement input	0
Measurement Input, Expected Dividend Rate [Member] | Warrant Liabilities [Member] | The 2019 Warrants [Member]
Warrants, measurement input	0
Measurement Input, Exercise Price [Member] | The 2016 Warrants [Member]
Warrants, measurement input	2.55
Measurement Input, Exercise Price [Member] | The 2019 Warrants [Member]
Warrants, measurement input	0.5
Measurement Input, Exercise Price [Member] | Warrant Liabilities [Member] | The 2016 Warrants [Member]
Warrants, measurement input	2.55
Measurement Input, Exercise Price [Member] | Warrant Liabilities [Member] | The 2019 Warrants [Member]
Warrants, measurement input	0.5
Measurement Input, Risk Free Interest Rate [Member] | The 2019 Warrants [Member]
Warrants, measurement input	0.023
Measurement Input, Risk Free Interest Rate [Member] | Warrant Liabilities [Member] | The 2016 Warrants [Member]
Warrants, measurement input	0.0188
Measurement Input, Risk Free Interest Rate [Member] | Warrant Liabilities [Member] | The 2019 Warrants [Member]
Warrants, measurement input	0.0155
Measurement Input, Weighted Average of Shares Granted, Fair Value [Member] | The 2019 Warrants [Member]
Warrants, measurement input	0.19
Measurement Input, Weighted Average of Shares Granted, Fair Value [Member] | Warrant Liabilities [Member] | The 2016 Warrants [Member]
Warrants, measurement input
Measurement Input, Weighted Average of Shares Granted, Fair Value [Member] | Warrant Liabilities [Member] | The 2019 Warrants [Member]
Warrants, measurement input	0.61

X

- Definition

The number of warrants or rights issued during period.

+ References

No definition available.

+ Details

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Namespace Prefix:	mlss_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

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Period Type:	instant

X

- Details

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- Details

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- Details

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- Details

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- Details

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