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Note 15 - Contingencies (Details Textual) $ in Millions | Sep. 30, 2022 USD ($)
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Lawsuit Filed Against Electronics [Member] |
Loss Contingency Accrual, Ending Balance | $ 5.7

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- Definition Amount of loss contingency liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=121557415&loc=d3e14615-108349 + Details
Name: | us-gaap_LossContingencyAccrualAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | srt_LitigationCaseAxis=sxi_LawsuitFiledAgainstElectronicsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |