Note J - Treasury Stock (Details Textual) - USD ($)	6 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	May. 11, 2015	Feb. 06, 2015	Jun. 02, 2011
2015 Increase [Member]
Stock Repurchase Program, Authorized Amount			$ 2,000,000	$ 1,000,000
Stock Repurchase Program, Authorized Amount			$ 5,000,000	$ 3,000,000	$ 2,000,000
Treasury Stock, Shares, Acquired	35,703	78,864
Treasury Stock Acquired, Average Cost Per Share	$ 5.91	$ 5.59
Treasury Stock, Value, Acquired, Cost Method	$ 212,000	$ 441,000