Stock-Based Compensation (Details) - 2011 Phantom Stock Option and Long-term Incentive Plan [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Jun. 30, 2022
Stock option activity, shares [Roll Forward]
Number of options outstanding at beginning of year (in shares)	1,786,120	1,982,720	1,479,520	1,507,600
Options Granted (in shares)	0	0	403,600	475,120
Options paid in cash upon vesting (in shares)	(478,700)	(476,200)	(575,700)	(476,200)
Number of options outstanding at period end (in shares)	1,307,420	1,506,520	1,307,420	1,506,520
Stock option related information [Abstract]
Cash paid out on options vested	$ 3,594	$ 3,054	$ 4,104	$ 3,054
Compensation costs recognized	1,026	$ 1,067	1,994	$ 1,877
Total liability for the Plan	$ 4,000		$ 4,000		$ 6,100