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Summary of Significant Accounting Policies - Concentrations (Details) - customer	12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Revenue | Customer Concentration Risk
Number of customers	0	0
Revenue | Customer Concentration Risk | Minimum
Concentration percentage	10.00%	10.00%
Accounts receivable | Customer Concentration Risk | Customer A
Concentration percentage	14.00%
Content costs from vendors | Supplier Concentration | Vendor A
Concentration percentage	20.00%	21.00%
Content costs from vendors | Supplier Concentration | Vendor B
Concentration percentage	13.00%	13.00%
Content costs from vendors | Supplier Concentration | Vendor C
Concentration percentage		10.00%

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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

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