Benefit Plans - Stock Option Activity (Details) - Stock options - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2020	Mar. 31, 2019	Jun. 30, 2019
Vesting period
Expiration period			10 years
Options Outstanding, Number of Shares
Balance at the beginning of the period			1,525
Options granted			0	0
Options exercised			(153)
Balance at the end of the period	1,372		1,372		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)			11.15
Balance at the end of the period (in dollars per share)	$ 12.37		$ 12.37		$ 12.24
Options Additional Disclosures
Weighted average remaining contractual term			3 years 2 months 12 days		3 years 11 months 12 days
Aggregate intrinsic value, at the beginning of the period			$ 124,373
Weighted average remaining contractual term of options vested and exercisable at the end of the period (years)			3 years 2 months 12 days
Aggregate intrinsic value, at the end of the period	$ 104,172		$ 104,172		$ 124,373
Options vested and exercisable at the end of the period (in shares)	1,372		1,372
Options vested and exercisable at the end of the period, weighted average exercise price (in dollars per share)	$ 12.37		$ 12.37
Options vested and exercisable intrinsic value	$ 104,172		$ 104,172
Total intrinsic value of options exercised	$ 16,164	$ 7,197	$ 18,244	$ 20,901
Minimum
Vesting period
Vesting period			3 years
Maximum
Vesting period
Vesting period			4 years