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, 2022	Mar. 31, 2021	Mar. 31, 2022	Mar. 31, 2021
Nature of Business and Summary of Significant Accounting Policies
Basic EPS	$ 3,273	$ 4,360	$ 12,062	$ 9,876
Diluted EPS	$ 3,273	$ 4,360	$ 12,062	$ 9,876
Weighted average
Basic (in shares)	36,743,000	36,697,000	36,723,000	36,696,000
Stock Options	136,000	126,000	150,000	108,000
Diluted (in shares)	36,879,000	36,823,000	36,873,000	36,804,000
Effect of Dilutive Securities:
Basic (in dollars per share)	$ 0.09	$ 0.12	$ 0.33	$ 0.27
Diluted (in dollars per share)	$ 0.09	$ 0.12	$ 0.33	$ 0.27
Excluded from diluted EPS	388,000	16,000	156,145	53,333