Note H - Segment Information (Details) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Note H - Segment Information (Details) [Line Items]
Number of Reportable Segments			3
Revenue, Net (in Dollars)	$ 19,127,000	$ 15,835,000	$ 52,757,000	$ 45,981,000
Natural Alternatives International Europe Sa [Member] | Geographic Concentration Risk [Member] | Markets Outside the United States [Member] | Sales Revenue, Net [Member]
Note H - Segment Information (Details) [Line Items]
Concentration Risk, Percentage	61.00%	73.00%	55.00%	72.00%
Natural Alternatives International Europe Sa [Member]
Note H - Segment Information (Details) [Line Items]
Revenue, Net (in Dollars)			0	0
Markets Outside the United States [Member]
Note H - Segment Information (Details) [Line Items]
Revenue, Net (in Dollars)	$ 10,135,000	$ 6,350,000	$ 26,062,000	$ 18,693,000