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Revenue (Tables)

3 Months Ended

Mar. 31, 2021

Revenue from Contract with Customer [Abstract]

Composition of Revenue

Revenue is comprised of the following:

		Three months ended March 31,
		2020				2021
Audio		$	50,912,978			$	41,729,602
Digital			5,284,025				5,763,728
Other			1,453,423				718,710
		$	57,650,426			$	48,212,040

Deferred Revenue

		December 31, 2020				March 31, 2021
Deferred revenue		$	3,732,890			$	3,873,046

		Three months ended March 31,
		2020				2021
Losses on receivables		$	834,925			$	1,095,313

Trade Sale Revenue

		December 31, 2020				March 31, 2021
Trade sales receivable		$	956,999			$	773,667
Trade sales payable			892,543				810,967

		Three months ended March 31,
		2020				2021
Trade sales revenue		$	1,968,260			$	929,597

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- Definition

Tabular disclosure of trade sales receivable and trade sales payable.

+ References

No definition available.

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- Definition

Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045

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- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045

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- References

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