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Property and Equipment - Additional Information (Detail)	12 Months Ended
	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

X

- Definition

Number of stations leasing towers from related party.

+ References

No definition available.

+ Details

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Namespace Prefix:	bbgi_
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X

- 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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X

- 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

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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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