XML 70 R51.htm IDEA: XBRL DOCUMENT v3.25.1

Broadcast Licenses, Goodwill and Other Intangible Assets (Schedule of certain key estimates and assumptions used in impairment test) (Details)	Dec. 31, 2024	Dec. 31, 2023
Discount rates | Licensing Agreements
Impairment measurement input	0.09	0.10
Discount rates | Goodwill
Impairment measurement input	0.09
Operating profit margin ranges | Licensing Agreements | Minimum
Impairment measurement input	0.178	0.178
Operating profit margin ranges | Licensing Agreements | Maximum
Impairment measurement input	0.364	0.364
Operating profit margin ranges | Goodwill | Minimum
Impairment measurement input	0.197
Operating profit margin ranges | Goodwill | Maximum
Impairment measurement input	0.27
Market long-term revenue growth rates | Licensing Agreements | Minimum
Impairment measurement input	0.005	0.01
Market long-term revenue growth rates | Licensing Agreements | Maximum
Impairment measurement input	0.015	0.02
Market long-term revenue growth rates | Goodwill
Impairment measurement input	0.012

X

- Definition

Impairment measurement input.

+ References

No definition available.

+ Details

Name:	sga_ImpairmentMeasurementInput
Namespace Prefix:	sga_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_LicensingAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_GoodwillMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=sga_MeasurementInputOperatingProfitMarginMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputLongTermRevenueGrowthRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: