Note I - Commitments (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended		0 Months Ended		0 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jul. 01, 2014 Subsequent Event [Member] Natural Alternatives International Europe Sa [Member] SWITZERLAND	Jun. 30, 2014 Natural Alternatives International Europe Sa [Member] SWITZERLAND sqft	Jul. 31, 2013 CALIFORNIA	Jun. 30, 2014 CALIFORNIA sqft
Note I - Commitments (Details) [Line Items]
Operating Lease Facility Area (in Square Feet)				87,763		162,000
Lessee Leasing Arrangements, Operating Leases, Renewal Term			5 years		10 years
Lessee Leasing Arrangements, Operating Leases, Term of Contract			5 years
Operating Leases, Rent Expense, Net (in Dollars)	$ 2.3	$ 2.2