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Note 1 - Organization - Schedule of Subsidiaries (Details) | Jun. 30, 2025
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Santech Global BVI Limited [Member] |
​Percentage of ownership | 100.00%
Santech Global International Limited [Member] |
​Percentage of ownership | 100.00%
Santech Global Hong Kong Limited [Member] |
​Percentage of ownership | 100.00%
Santech Global USA Inc [Member] |
​Percentage of ownership | 100.00%

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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | srt_OwnershipAxis=stec_SantechGlobalBVILimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_OwnershipAxis=stec_SantechGlobalInternationalLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_OwnershipAxis=stec_SantechGlobalHongKongLimitedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_OwnershipAxis=stec_SantechGlobalUSAIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |