Note F - Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	$ 7,500,000
Foreign Tax Authority [Member] | Natural Alternatives International Europe SA [Member]
Effective Income Tax Rate Reconciliation, Percent	17.00%
Natural Alternatives International Europe SA [Member]
Net Income (Loss) Attributable to Parent	$ 2,200,000
Undistributed Earnings of Foreign Subsidiaries	15,100,000
Tax Adjustments, Settlements, and Unusual Provisions	0
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	$ 0	$ 193,000
Effective Income Tax Rate Reconciliation, Percent	22.30%	25.10%
Net Income (Loss) Attributable to Parent	$ 3,346,000	$ 1,994,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	34.00%