Stockholders' equity - Summary of RSU Activity (Details) shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2020 USD ($) shares
Number of Shares
RSUs outstanding (in shares)	2,476
Restricted stock units
Number of Shares
RSUs outstanding (in shares)	2,637
Granted (in shares)	1,633
Vested (in shares)	(1,057)
Canceled (in shares)	(737)
RSUs outstanding (in shares)	2,476
RSUs expected to vest (in shares)	2,175
Weighted average remaining contractual life (years)
RSUs outstanding - Weighted average remaining contractual life	1 year 4 months 20 days
RSUs expected to vest - Weighted average remaining contractual life	1 year 3 months 14 days
Aggregate intrinsic value
RSUs outstanding - Aggregate intrinsic value | $	$ 13,595
RSUs expected to vest - Aggregate intrinsic value | $	$ 11,938