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Note 10 - Equity Compensation (Detail) (USD $)
0 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended 3 Months Ended 9 Months Ended
Jul. 02, 2010
Oct. 02, 2012
Jan. 02, 2013
Mar. 31, 2013
Mar. 31, 2012
Apr. 01, 2012
Apr. 01, 2011
Jun. 30, 2010
Jun. 30, 2012
Mar. 31, 2013
Employee Stock Option [Member]
Mar. 31, 2012
Employee Stock Option [Member]
Mar. 31, 2013
Employee Stock Option [Member]
Mar. 31, 2012
Employee Stock Option [Member]
Mar. 31, 2013
Treasury Stock [Member]
Mar. 31, 2012
Treasury Stock [Member]
Mar. 31, 2013
Minimum [Member]
Mar. 31, 2012
Minimum [Member]
Mar. 31, 2013
Maximum [Member]
Mar. 31, 2012
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)       1,079,499                              
Share-based Compensation Arrangement by Share-based Payment Award, Number of Share INcluded in Available for Grant Transferred From Previous Plan (in Shares)       282,223                              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number (in Shares)       2,392,775                              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number (in Shares)       1,682,300 1,403,525                            
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized       $ 561,460                              
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition       30 months                              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)       414,750 36,000                            
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit (in Dollars per share)       $ 6.28 $ 6.68                            
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit (in Dollars per share)       $ 6.58 $ 7.22                            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)                               $ 2.00 $ 2.45 $ 2.11 $ 2.60
Share-based Compensation Remaining Contractual Lives                               nine years five months nine years eight months nine years eight months nine years eleven months
Share-Based Compensation Valuation Assumptions Expected Forfeiture Rate 3.00% 3.40% 2.30%     4.10% 3.60% 6.55%                      
Stock or Unit Option Plan Expense       740,000 317,000         102,348 89,174 740,395 317,373            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number (in Shares)       2,381,320                              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price (in Dollars per share)       $ 9.92                              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value       755,074                              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term       5 years 292 days                              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value       12,987 1,960                            
Proceeds from Stock Options Exercised       47,025 10,420                            
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period (in Shares)       6,204 5,468                            
Stock Issued During Period, Value, Share-based Compensation, Gross       44,000 39,700                            
Treasury Stock, Shares (in Shares)       286,102         266,615                    
Treasury Stock, Value       2,772,600         2,641,000                    
Treasury Stock Acquired, Repurchase Authorization                               25,000   26,000  
Treasury Stock, Value, Acquired, Cost Method                           $ 156,700 $ 145,200