Benefit Plans - RSU activity (Details) - Restricted stock units $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
	Mar. 31, 2020 USD ($) $ / shares shares	Mar. 31, 2020 USD ($) $ / shares shares
Unrecognized Compensation Costs Not yet Recognized, Net of Estimated Forfeitures
Total unrecognized compensation cost, net of estimated forfeitures related to unvested RSUs | $	$ 50,414	$ 50,414
Weighted average period to recognize unrecognized compensation cost		1 year 10 months 28 days
Amount of stock-based compensation expense reversed during period | $	$ 2,053
RSUs Outstanding Rollforward, Units
RSU Balance at the beginning of the period | shares		1,813
RSUs granted | shares		642
RSUs vested | shares		(708)
RSUs forfeited | shares		(93)
RSU Balance at the end of the period | shares	1,654	1,654
RSUs expected to vest at the end of the period | shares	1,442	1,442
RSUs Outstanding, Weighted average grant date fair value
RSU Balance at the beginning of the period | $ / shares		$ 53.78
RSUs granted | $ / shares		99.72
RSUs vested | $ / shares		49.75
RSUs forfeited | $ / shares		59.72
RSU Balance at the end of the period | $ / shares	$ 73.57	73.57
RSUs expected to vest at the end of the period | $ / shares	$ 71.83	$ 71.83
Maximum
Equity Incentive Plans
Vesting period		4 years