XML 62 R53.htm IDEA: XBRL DOCUMENT
v3.22.1

Note 12 - Subsequent Event (Details Textual) | May 01, 2022
--- | ---
Subsequent Event [Member] | Guardian Products, Inc [Member] | Restricted Shares [Member] |
Business Acquisition, Equity Interested Issued, Vesting Period (Year) | 3 years

X
- Definition Period in which the equity interest holder's right to exercise the equity. + References No definition available. + Details
Name: | sgc_BusinessAcquisitionEquityInterestedIssuedVestingPeriod
Namespace Prefix: | sgc_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=sgc_GuardianProductsIncMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquityInterestIssuedOrIssuableByTypeAxis=sgc_RestrictedSharesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |