Nature of Business and Summary of Significant Accounting Policies - Net Income per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Nature of Business and Summary of Significant Accounting Policies
Basic EPS	$ 10,840	$ 3,273	$ 25,688	$ 12,062
Diluted EPS	$ 10,840	$ 3,273	$ 25,688	$ 12,062
Weighted average
Basic (in shares)	36,793,000	36,743,000	36,736,000	36,723,000
Stock Options	289,000	136,000	247,000	150,000
Diluted (in shares)	37,082,000	36,879,000	36,983,000	36,873,000
Effect of Dilutive Securities:
Basic (in dollars per share)	$ 0.29	$ 0.09	$ 0.70	$ 0.33
Stock Options (in dollars per share)			(0.01)
Diluted (in dollars per share)	$ 0.29	$ 0.09	$ 0.69	$ 0.33
Excluded from diluted EPS	0	388,000	8,379	156,145