Investments and fair value measurements - Schedule of Investments on Condensed Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Jun. 30, 2023
Current assets:
Marketable securities:	$ 430,690	$ 476,936
Strategic investments	10,311	10,311	$ 10,300
Level 1
Current assets:
Strategic investments	0	0
Non-current liabilities:
Cash settled stock appreciation rights	0	0
Level 1 | U.S. government securities
Current assets:
Marketable securities:	0	0
Level 1 | Money market funds
Current assets:
Cash equivalents:	217,979	266,692
Level 2
Current assets:
Strategic investments	0	0
Non-current liabilities:
Cash settled stock appreciation rights	0	0
Level 2 | U.S. government securities
Current assets:
Marketable securities:	173,883	171,372
Level 2 | Money market funds
Current assets:
Cash equivalents:	0	0
Level 3
Current assets:
Strategic investments	10,311	10,311
Non-current liabilities:
Cash settled stock appreciation rights	22	48
Level 3 | U.S. government securities
Current assets:
Marketable securities:	0	0
Level 3 | Money market funds
Current assets:
Cash equivalents:	$ 0	$ 0