Note G - Economic Dependency (Details) - Substantial Net Sales to Certain Customers (USD $)	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Concentration Risk [Line Items]
Net Sales	$ 18,695,000	$ 17,155,000
Customer 1 [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Net Sales	6,997,000	5,277,000
% of Total Net Sales	40.00%	34.00%
Customer 2 [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Net Sales	2,908,000	3,634,000
% of Total Net Sales	17.00%	24.00%
Customer 3 [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Net Sales	2,209,000	1,969,000
% of Total Net Sales	13.00%	13.00%
Sales Revenue, Net [Member] | Customer Concentration Risk [Member]
Concentration Risk [Line Items]
Net Sales	$ 12,114,000	$ 10,880,000
% of Total Net Sales	70.00%	71.00%