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Note 8 - Net Income Per Share (Details Textual) - $ / shares | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | 295,361 | 1,268,882 | 347,718 | 1,138,927
Antidilutive Securities Excluded from Computation of Earnings Per Share, Weight Average Exercise Price (in dollars per share) | $ 21.9 | $ 15.19 | $ 21.38 | $ 16.11

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- Definition The weighted average exercise price of options excluded from the computation of earnings per share. + References No definition available. + Details
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Namespace Prefix: | sgc_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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Namespace Prefix: | us-gaap_
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Period Type: | duration