Note H - Stockholders' Equity - Stock Option Activity (Details) - USD ($)	12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Exercised (in shares)	0	0
Granted (in shares)	0	0
2009 Omnibus Stock Incentive Plan [Member]
Vested and exercisable (in shares)	140,000
Vested and exercisable, weighted average exercise price (in dollars per share)	$ 6.36
Exercised (in shares)
Exercised, weighted average exercise price (in dollars per share)
Forfeited (in shares)
Forfeited, weighted average exercise price (in dollars per share)
Granted (in shares)
Granted, weighted average exercise price (in dollars per share)
Vested and exercisable, weighted average exercise price (in dollars per share)	$ 6.36	$ 6.36
Vested and exercisable, weighted average contractual term (Year)	3 years 211 days
Vested and exercisable, aggregate intrinsic value	$ 502,000
Outstanding (in shares)	140,000
Outstanding, weighted average exercise price (in dollars per share)	$ 6.36
Outstanding, weighted average contractual term (Year)	3 years 211 days
Outstanding, aggregate intrinsic value	$ 502,000
Vested and exercisable (in shares)	140,000	140,000