Quarterly Financial Data (Unaudited) - (Details) - $ / shares shares in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share, Basic and Diluted [Abstract]
Basic (in dollars per share)	$ 1.40	$ 0.92	$ 1.91	$ 0.48	$ 1.40	$ 0.62	$ 0.58	$ 0.78	$ 4.71	$ 3.38	$ 3.74
Diluted (in dollars per share)	$ 1.39	$ 0.91	$ 1.89	$ 0.48	$ 1.39	$ 0.61	$ 0.58	$ 0.77	$ 4.67	$ 3.34	$ 3.69
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic (in shares)	68,028	67,920	67,780	67,729	67,634	67,806	68,114	68,441	67,863	68,000	69,925
Diluted (in shares)	68,612	68,608	68,400	68,299	68,176	68,482	68,844	69,317	68,492	68,727	70,787