Equity Incentive Plan - Activity (Details) - USD ($)	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Shares
Outstanding at the beginning of the period (in shares)	1,199,307	1,356,528	2,350,175
Exercised (in shares)	(150,290)	(14,600)	(425,180)
Forfeited or canceled (in shares)	(13,000)	(142,621)	(568,467)
Outstanding at the end of the period (in shares)	1,036,017	1,199,307	1,356,528
Weighted-Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 19.97	$ 20.19	$ 20.20
Exercised (in dollars per share)	20.16	13.45	16.35
Forfeited or canceled (in dollars per share)	29.82	22.71	23.12
Outstanding at the end of the period (in dollars per share)	$ 19.82	$ 19.97	$ 20.19
Additional information
Weighted Average Remaining Contractual Life	2 years 7 months 21 days
Aggregate Intrinsic Value	$ 11,312,871
Exercisable (in shares)	1,019,822
Stock options exercisable, Weighted Average Exercise Price (in dollars per share)	$ 19.92
Stock options exercisable, Weighted Average Remaining Contractual Life (Years)	2 years 7 months 13 days
Stock options exercisable, Aggregate Intrinsic Value	$ 11,054,860