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Property and Equipment - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2015 USD ($) Radio_Stations | Dec. 31, 2014 USD ($)
Property, Plant and Equipment [Line Items] |  |
Depreciation and amortization expense | $ 3,834,992 | $ 2,525,951
Broadcast Equipment [Member] |  |
Property, Plant and Equipment [Line Items] |  |
Number of radio towers leased for radio stations under separate lease agreements | Radio_Stations | 2 |
Capital leased property and equipment | $ 800,000 |

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- Definition Number of stations leasing towers from related party. + References No definition available. + Details
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Namespace Prefix: | bbgi_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6455314&loc=d3e45014-112735 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | debit
Period Type: | instant

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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |