Nature of Business and Summary of Significant Accounting Policies - Net Income per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Nature of Business and Summary of Significant Accounting Policies
Basic EPS	$ 19,599	$ 15,413	$ 7,795
Diluted EPS	$ 19,599	$ 15,413	$ 7,795
Weighted average
Basic (in shares)	36,725,000	36,696,000	36,888,000
Stock Options	142,000	112,000	98,000
Diluted (in shares)	36,867,000	36,808,000	36,986,000
Effect of Dilutive Securities:
Basic (in dollars per share)	$ 0.53	$ 0.42	$ 0.21
Diluted (in dollars per share)	$ 0.53	$ 0.42	$ 0.21
Excluded from diluted EPS	214,109	40,000	77,638