Nature of Business and Summary of Significant Accounting Policies - Net Income per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Nature of Business and Summary of Significant Accounting Policies
Basic EPS	$ 12,610	$ 3,929	$ 23,088	$ 7,013
Diluted EPS	$ 12,610	$ 3,929	$ 23,088	$ 7,013
Weighted average
Weighted Average Shares, Basic EPS	36,829,000	36,772,000	36,743,000	36,731,000
Weighted Average Shares, Stock Options	189,000	225,000	219,000	226,000
Weighted Average Shares, Diluted EPS	37,018,000	36,997,000	36,962,000	36,957,000
Effect of Dilutive Securities:
Basic (in dollars per share)	$ 0.34	$ 0.11	$ 0.63	$ 0.19
Stock Options (in dollars per share)			(0.01)
Diluted (in dollars per share)	$ 0.34	$ 0.11	$ 0.62	$ 0.19
Excluded from diluted EPS	67,500	0	36,250	12,568