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Note D - Inventories (Details Textual) - USD ($) | Dec. 31, 2021 | Dec. 31, 2020
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Slow Moving Medical Finished Goods [Member] |  |
Inventory Valuation Reserves, Ending Balance | $ 450,000 |
Slow Moving Dental Finished Goods [Member] |  |
Inventory Valuation Reserves, Ending Balance | $ 2,020 | $ 3,000

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- Definition Amount of valuation reserve for inventory. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.BB) -URI http://asc.fasb.org/extlink&oid=27011343&loc=d3e100047-122729 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.6(a)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_PublicUtilitiesInventoryAxis=mlss_SlowMovingDentalFinishedGoodsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |