Note G - Economic Dependency - Substantial Net Sales to Certain Customers (Details) (USD $)	3 Months Ended				9 Months Ended
	Mar. 31, 2015		Mar. 31, 2014		Mar. 31, 2015		Mar. 31, 2014
Revenues	$ 12,678,000		$ 12,065,000		$ 31,354,000		$ 33,293,000
Major customers revenue, percent	74.00%		69.00%		61.00%		70.00%
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] | Customer 1 [Member]
Revenues	7,051,000		6,321,000		22,999,000		16,849,000
Major customers revenue, percent	41.00%		36.00%		45.00%		35.00%
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] | Customer 2 [Member]
Revenues	3,763,000		2,823,000		8,355,000		8,484,000
Major customers revenue, percent	22.00%		16.00%		16.00%		18.00%
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] | Customer 3 [Member]
Revenues		[1]	2,921,000			[1]	7,960,000
Major customers revenue, percent		[1]	17.00%			[1]	17.00%
Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] | Customer 4 [Member]
Revenues	$ 1,864,000			[1]		[1]		[1]
Major customers revenue, percent	11.00%			[1]		[1]		[1]

[1] Sales were less than 10% of the respective period's total private label contract manufacturing net sales.