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Related Party Transactions - Additional Information (Detail)										3 Months Ended	12 Months Ended
	Nov. 17, 2015 USD ($) Tower	Oct. 16, 2015 USD ($)	Apr. 03, 2015 USD ($)	Apr. 04, 2014 USD ($)	Apr. 10, 2013 USD ($)	Jul. 31, 2012 USD ($)	Feb. 14, 2012 USD ($)	Mar. 25, 2011 USD ($) shares	Aug. 04, 2006 Radio_Stations	Jun. 30, 2014 USD ($)	Dec. 31, 2015 USD ($) Radio_Stations Tower Automatic_Renewal	Dec. 31, 2014 USD ($)
Related Party Transaction [Line Items]
Proceeds from sale of tower											$ 1,737,500
Lease agreement expiration date											Dec. 31, 2025
Number of automatic renewals | Automatic_Renewal											4
Renewal term of lease agreement											5 years
Notes receivable from related parties												$ 1,748,092
Lease or rental expense											$ 3,700,000	3,100,000
Number of radio towers sold to unrelated party | Tower	2
Deferred gain recognized	$ 300,000
Augusta, GA [Member]
Related Party Transaction [Line Items]
Number of radio towers sold for radio station | Tower											1
Proceeds from sale of tower											$ 1,300,000
Charlotte, NC [Member]
Related Party Transaction [Line Items]
Number of radio towers sold for radio station | Tower											1
Proceeds from sale of tower											$ 400,000
Digital PowerRadio LLC [Member]
Related Party Transaction [Line Items]
Additional contribution to related party			$ 166,667	$ 104,167	$ 104,167	$ 104,167	$ 62,500	$ 250,000
Related party stock purchase | shares								25,000
Percentage of outstanding units ownership interest to Digital PowerRadio			20.00%	20.00%	20.00%	20.00%		20.00%
Beasley Family Towers Inc [Member]
Related Party Transaction [Line Items]
Deferred gain on sale											800,000
Lease or rental expense											3,000
Monthly repayment of prepaid rent to related party	5,500
Repayment of prepaid rent to related party											8,000
Indebtedness amount											300,000
Loss on notes receivable										$ 300,000
Beasley Family Towers Inc [Member] | Prepaid Rent [Member]
Related Party Transaction [Line Items]
Prepaid expense paid by related party	$ 700,000
Beasley Family Towers Inc [Member] | Notes Receivable [Member]
Related Party Transaction [Line Items]
Interest income on the notes receivable											$ 37,000	50,000
Beasley Family Towers Inc [Member] | December 28, 2020 [Member]
Related Party Transaction [Line Items]
Lease agreement expiration date											Dec. 28, 2020
Number of radio towers leased for radio stations under separate lease agreements | Radio_Stations											23
Lease or rental expense											$ 500,000	500,000
Beasley Family Towers Inc [Member] | April 30, 2016 [Member]
Related Party Transaction [Line Items]
Lease agreement expiration date											Apr. 30, 2016
Number of radio towers leased for radio stations under separate lease agreements | Radio_Stations									1
Lease or rental expense											$ 0	0
Wintersrun Communications Inc [Member]
Related Party Transaction [Line Items]
Deferred gain on sale											$ 300,000
Number of radio towers leased for radio stations under separate lease agreements | Radio_Stations											1
Lease or rental expense											$ 24,000	31,000
Monthly repayment of prepaid rent to related party		$ 2,559
Repayment of prepaid rent to related party											$ 6,000
Wintersrun Communications Inc [Member] | Prepaid Rent [Member]
Related Party Transaction [Line Items]
Prepaid expense paid by related party		$ 300,000
GGB Las Vegas, LLC [Member]
Related Party Transaction [Line Items]
Lease agreement expiration date											Dec. 31, 2018
Lease or rental expense											$ 200,000	200,000
GGB Estero, LLC [Member]
Related Party Transaction [Line Items]
Lease agreement expiration date											Aug. 31, 2019
Lease or rental expense											$ 200,000	200,000
GGB Augusta, LLC [Member]
Related Party Transaction [Line Items]
Lease agreement expiration date											Nov. 01, 2023
Lease or rental expense											$ 42,000	41,000
Beasley Broadcasting Management, LLC [Member]
Related Party Transaction [Line Items]
Lease or rental expense											$ 200,000	$ 200,000

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