XML 102 R36.htm IDEA: XBRL DOCUMENT v2.4.0.8
Income Taxes - Additional Information (Detail) (USD $)
 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Income Taxes [Line Items]    
Net income $ 1,570,000 $ 4,158,000
Statutory federal income tax rate applied in the computation of income tax benefit 34.00% 34.00%
Natural Alternatives International Europe Sa
    
Income Taxes [Line Items]    
Effective tax rate 18.63%  
Net income 1,300,000  
Undistributed earnings 11,400,000  
State and Local Jurisdiction
    
Income Taxes [Line Items]    
Net operating loss carry forward $ 8,600,000  
State and Local Jurisdiction | Minimum
    
Income Taxes [Line Items]    
Tax loss carry forward expiry year 2022