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v3.24.1.1.u2

Other Income (Details) | 3 Months Ended
--- | ---
Mar. 31, 2023 USD ($)
Other (income) expense, net |
Other Income [Line Items] |
Reimbursements received | $ 115,000

X
- References No definition available. + Details
Name: | sga_OtherIncomeLineItems
Namespace Prefix: | sga_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of reimbursements received from reimbursement fund for costs incurred on repacking and continuing to carry signals of reassigned broadcast stations. + References No definition available. + Details
Name: | sga_ReimbursementsReceivedForCostsIncurredRelatedToRepack
Namespace Prefix: | sga_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=us-gaap_OtherNonoperatingIncomeExpenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |