Balance sheet information - Intangibles, Other Assets and Accrued Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2019	Sep. 30, 2020	Jun. 30, 2020
Balance Sheet Related Disclosures [Abstract]
Goodwill		$ 14,255	$ 14,255
Amortization of intangible assets	$ 218
Other Assets
Deposits and other assets		1,841	1,225
Non-marketable equity investments		8,970	6,670
Warrant to purchase non-marketable equity investment units		817	713
Non-marketable equity investments accounted for under the equity method		20,557	20,027
Non-marketable debt investments		9,007	5,917
Total other assets		41,192	34,552
Accrued Expenses
Accrued compensation and benefits		8,735	15,117
Accrued royalties		13,091	9,701
Customer overpayments and related reserves		2,607	2,666
Other accrued expenses		7,400	8,726
Total accrued expenses		$ 31,833	$ 36,210