Benefit Plans - Stock Option Activity (Details) - Stock options - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Vesting period
Expiration period	10 years
Options Outstanding, Number of Shares
Balance at the beginning of the year	1,525
Options granted	0	0	0
Options exercised	(270)
Balance at the end of the year	1,255	1,525
Options Outstanding, Weighted average exercise price
Balance at the beginning of the period (in dollars per share)	$ 12.24
Options exercised (in dollars per share)	11.39
Balance at the end of the period (in dollars per share)	$ 12.43	$ 12.24
Options Additional Disclosures
Weighted average remaining contractual term	2 years 11 months 15 days	3 years 11 months 12 days
Aggregate intrinsic value at the beginning of the year	$ 124,373
Weighted average remaining contractual term of options vested and exercisable at the end of the year (years)	2 years 11 months 15 days
Aggregate intrinsic value at the end of the year	$ 167,406	$ 124,373
Options vested and exercisable at the end of the year (in shares)	1,255
Options vested and exercisable at the end of the year, weighted average exercise price (in dollars per share)	$ 12.43
Options vested and exercisable intrinsic value	$ 167,406
Total intrinsic value of options exercised	$ 29,791	$ 24,920	$ 34,083
Minimum
Vesting period
Vesting period	3 years
Maximum
Vesting period
Vesting period	4 years