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Basis of Presentation and Summary of Significant Accounting Policies - Concentration Risk (Details)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenue Benchmark | Customer Concentration Risk | Largest Licensee
Concentration Risk [Line Items]
Concentration risk, percentage	13.00%	17.00%

X

- 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.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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-SubTopic 10
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