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, 2022	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2022	Dec. 31, 2021
Nature of Business and Summary of Significant Accounting Policies
Basic EPS	$ 8,446	$ 1,037		$ 14,848	$ 8,789
Diluted EPS	$ 8,446	$ 1,037		$ 14,848	$ 8,789
Weighted average
Basic (in shares)	36,772,000	36,728,000		36,731,000	36,720,000
Stock Options	225,000	170,000		226,000	157,000
Diluted (in shares)	36,997,000	36,898,000		36,957,000	36,877,000
Effect of Dilutive Securities:
Basic (in dollars per share)	$ 0.23	$ 0.03	$ 0.03	$ 0.40	$ 0.24
Diluted (in dollars per share)	$ 0.23	$ 0.03		$ 0.40	$ 0.24
Excluded from diluted EPS	0	80,435		12,568	40,217