Summary of Significant Accounting Policies - Content costs (Details) |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2019 |
Dec. 31, 2018 |
|
| Vendor A [Member] | ||||
| Concentration Risk, Percentage | 22.00% | 18.00% | 21.00% | 18.00% |
| Vendor B [Member] | ||||
| Concentration Risk, Percentage | 12.00% | 11.00% | 12.00% | 11.00% |
| Vendor C [Member] | ||||
| Concentration Risk, Percentage | 11.00% | 13.00% | 12.00% | |