Accounts Receivable and Credit Losses (Financing Receivables Past Due Prior to Adopting ASC 326) (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020
Financing Receivable, Recorded Investment, Past Due [Line Items]
Institutional Loans, Past Due		$ 24,276	$ 19,684
Institutional Loans, Current		25,749	30,612
Total Institutional Loans	$ 45,747	50,025	50,296
Financing Receivables 1 To 30 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Institutional Loans, Past Due		7,192	3,484
Total Institutional Loans	2,445
Financing Receivables 31 To 60Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Institutional Loans, Past Due		1,755	1,145
Financing Receivables 61 To 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Institutional Loans, Past Due		1,547	1,673
Total Institutional Loans	$ 4,312
Financing Receivables Greater Than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Institutional Loans, Past Due		$ 13,782	$ 13,382