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Note A - Basis of Presentation and Summary of Significant Accounting Policies (Details Textual) - USD ($)
xbrli-pure in Thousands
3 Months Ended 9 Months Ended
Mar. 28, 2017
Mar. 26, 2016
Mar. 31, 2017
Mar. 31, 2016
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Jun. 30, 2016
Royalty and Licensing Revenue     $ 6,600,000 $ 5,500,000 $ 20,000,000 $ 16,100,000    
Royalty Expense     233,000 193,000 799,000 666,000    
Allocated Share-based Compensation Expense     223,000 $ 183,000 729,000 $ 463,000    
Fair Value, Inputs, Level 2 [Member] | Foreign Exchange Forward [Member]                
Foreign Currency Contract, Asset, Fair Value Disclosure     1,100,000   1,100,000     $ 250,000
Fair Value, Inputs, Level 3 [Member]                
Fair Value, Net Asset (Liability)     0   0   $ 0 0
Fair Value, Inputs, Level 1 [Member]                
Fair Value, Net Asset (Liability)     $ 0   $ 0     $ 0
Employee Stock Option [Member]                
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount     0 0 0 0    
2009 Omnibus Stock Incentive Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate         0.00%      
2009 Omnibus Stock Incentive Plan [Member] | Restricted Stock [Member] | Board of Directors and Management Members [Member]                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 140,000 130,000            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years