Stock-Based Compensation (Details) - 2011 Phantom Stock Option and Long-term Incentive Plan [Member] - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Share-based Compensation [Abstract]
Number of shares authorized under the plan (in shares)	5,800,000	5,800,000
Number of options granted to date (in shares)	5,773,402	5,298,282
Stock option activity, shares [Roll Forward]
Number of options outstanding at beginning of year (in shares)	1,507,600	1,765,100
Options granted (in shares)	475,120	523,700
Options Forfeited (in shares)	0	0
Options paid in cash upon vesting (in shares)	(503,200)	(781,200)
Number of options outstanding at period end (in shares)	1,479,520	1,507,600
Stock option related information [Abstract]
Cash paid out on options vested	$ 3,137	$ 3,920
Compensation costs recognized	4,291	4,012
Total liability for the Plan	$ 6,100	$ 5,000
Minimum [Member]
Share-based Compensation [Abstract]
Strike price of phantom stock options as percent of book value	100.00%