Note I - Stockholders' Equity - Restricted Stock (Details) - Restricted Stock [Member] - $ / shares	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
The 2009 Omnibus Stock Incentive Plan [Member]
Nonvested, Shares (in shares)	1,666	61,324
Nonvested, weighted-average grant date fair value (in dollars per share)	$ 8.50	$ 11.47
Granted, Shares (in shares)	0	0
Granted, weighted-average grant date fair value (in dollars per share)	$ 0	$ 0
Vested, Shares (in shares)	1,666	51,326
Granted, weighted-average grant date fair value (in dollars per share)	$ 8.50	$ 11.52
Forfeited, Shares (in shares)	0	(8,332)
Forfeited, weighted-average grant date fair value (in dollars per share)	$ 0	$ 10.88
Nonvested, Shares (in shares)	0	1,666
Nonvested, weighted-average grant date fair value (in dollars per share)	$ 0	$ 8.50
Available for grant, Shares (in shares)	0	0
Vested, Shares (in shares)	(1,666)	(51,326)
The 2020 Omnibus Stock Incentive Plan [Member]
Nonvested, Shares (in shares)	186,227	87,773
Nonvested, weighted-average grant date fair value (in dollars per share)	$ 12.56	$ 16.81
Granted, Shares (in shares)	123,000	135,850
Granted, weighted-average grant date fair value (in dollars per share)	$ 8.79	$ 10.99
Vested, Shares (in shares)	71,146	25,896
Granted, weighted-average grant date fair value (in dollars per share)	$ 13.04	$ 16.81
Forfeited, Shares (in shares)	(14,399)	(11,500)
Forfeited, weighted-average grant date fair value (in dollars per share)	$ 11.69	$ 16.81
Nonvested, Shares (in shares)	223,682	186,227
Nonvested, weighted-average grant date fair value (in dollars per share)	$ 10.39	$ 12.56
Available for grant, Shares (in shares)	349,377	472,377
Vested, Shares (in shares)	(71,146)	(25,896)