Note I - Treasury Stock (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Mar. 28, 2017	May 11, 2015	Feb. 06, 2015	Jun. 02, 2011
Stock Repurchase Program, Authorized Amount					$ 7,000,000	$ 5,000,000	$ 3,000,000	$ 2,000,000
Treasury Stock, Value, Acquired, Cost Method			$ 941,000	$ 505,000
Excluding Restricted Stock Purchased [Member]
Treasury Stock, Shares, Acquired	5,748	0	42,697	0
Treasury Stock Acquired, Average Cost Per Share	$ 10.17		$ 9.75
Treasury Stock, Value, Acquired, Cost Method	$ 58,000		$ 416,000
In Connection with Restricted Stock [Member]
Treasury Stock, Shares, Acquired	39,118	35,203	46,656	43,201
Treasury Stock Acquired, Average Cost Per Share	$ 11.58	$ 11.90	$ 11.27	$ 11.69
Treasury Stock, Value, Acquired, Cost Method	$ 453,000	$ 419,000	$ 525,000	$ 505,000
2015 Increase [Member]
Stock Repurchase Program, Authorized Amount						$ 2,000,000	$ 1,000,000
2017 Increase [Member]
Stock Repurchase Program, Authorized Amount					$ 2,000,000
Juice Plus, Amended and Restated Exclusive Manufacturing Agreement [Member] | Restricted Stock [Member]
Treasury Stock, Shares, Acquired	400,000