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Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2021 USD ($) Client | Mar. 31, 2020 Client | Mar. 31, 2021 USD ($) Client | Mar. 31, 2020 Client | Jun. 30, 2020 USD ($) Client
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Revenue reserve | $ | $ 1.1 |  | $ 1.1 |  | $ 0.9
Allowance for credit losses and revenue reserve | $ | $ 1.3 |  | $ 1.3 |  | $ 10.2
Customer Concentration Risk [Member] | Net revenue [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Number of clients accounted for more than 10% of net revenue | 1 | 1 | 1 | 1 |
Concentration risk percentage accounted by major clients | 26.00% | 22.00% | 25.00% | 19.00% |
Number of other clients accounted for more than 10% of net revenue | 0 | 0 | 0 | 0 |
Customer Concentration Risk [Member] | Accounts Receivable [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Number of clients accounted for 10% or more than 10% of net accounts receivable |  |  | 0 |  | 0
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Client Two [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Concentration risk percentage accounted by major clients |  |  | 16.00% |  | 17.00%
Number of clients accounted for 10% or more than 10% of net accounts receivable |  |  | 1 |  | 1
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Client Three [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Concentration risk percentage accounted by major clients | 11.00% |  |  |  |
Number of clients accounted for 10% or more than 10% of net accounts receivable | 1 |  |  |  |
Maximum [Member] |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Fair value method investment ownership percentage | 20.00% |  | 20.00% |  |

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