XML 68 R55.htm IDEA: XBRL DOCUMENT
v3.23.1

FCC Licenses - Discounted Cash Flow Analyses (Detail) | 3 Months Ended
--- | ---
Dec. 31, 2022 | Jun. 30, 2022
Measurement Input, Discount Rate [Member] |  |
Fair Value Inputs Asset Quantitative Information [Line Items] |  |
Fair value assumptions inputs rate | 9.50% | 9.50%
Minimum [Member] |  |
Fair Value Inputs Asset Quantitative Information [Line Items] |  |
Market revenue shares at maturity | 0.70% | 0.60%
Operating income margins at maturity | 19.70% | 19.20%
Minimum [Member] | Measurement Input, Long-term Revenue Growth Rate [Member] |  |
Fair Value Inputs Asset Quantitative Information [Line Items] |  |
Fair value assumptions inputs rate | 0.30% | (1.90%)
Maximum [Member] |  |
Fair Value Inputs Asset Quantitative Information [Line Items] |  |
Market revenue shares at maturity | 44.70% | 44.00%
Operating income margins at maturity | 30.40% | 32.60%
Maximum [Member] | Measurement Input, Long-term Revenue Growth Rate [Member] |  |
Fair Value Inputs Asset Quantitative Information [Line Items] |  |
Fair value assumptions inputs rate | 2.70% | 15.90%

X
- Definition Fair value assumptions inputs long terms pre tax operating margin percent. + References No definition available. + Details
Name: | bbgi_FairValueAssumptionsInputsLongTermsPreTaxOperatingMarginPercent
Namespace Prefix: | bbgi_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair Value Assumptions Inputs Rate. + References No definition available. + Details
Name: | bbgi_FairValueAssumptionsInputsRate
Namespace Prefix: | bbgi_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair Value Inputs Asset Quantitative Information [Line Items] + References No definition available. + Details
Name: | bbgi_FairValueInputsAssetQuantitativeInformationLineItems
Namespace Prefix: | bbgi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Market revenue shares at maturity. + References No definition available. + Details
Name: | bbgi_MarketRevenueSharesAtMaturity
Namespace Prefix: | bbgi_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
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: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputLongTermRevenueGrowthRateMember
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: |