XML 59 R49.htm IDEA: XBRL DOCUMENT v3.20.2
Note I - Stock-based Compensation (Details Textual) - USD ($)
3 Months Ended
Aug. 26, 2020
Aug. 29, 2018
Aug. 05, 2015
Jul. 31, 2020
Jul. 31, 2019
Share-based Payment Arrangement, Expense       $ 2,300,000 $ 1,600,000
Share-based Payment Arrangement, Expense, after Tax       $ 1,800,000 $ 1,200,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)       30,000 25,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Fair Value       $ 886,000 $ 974,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value       $ 20,600,000 23,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number (in shares)       305,750  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Aggregate Intrinsic Value       $ 12,400,000  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term (Year)       5 years 7 months 24 days  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price (in dollars per share)       $ 54.96  
Share-based Payment Arrangement, Option [Member]          
Share-based Payment Arrangement, Expense       $ 1,100,000 1,300,000
Share-based Payment Arrangement, Expense, after Tax       877,000 998,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total       $ 7,600,000  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)       2 years 3 months 18 days  
Restated Option Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)   2,000,000 1,800,000    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares)   200,000      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)       45,000  
Restated Option Plan [Member] | Share-based Payment Arrangement, Option [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)     10 years    
Restated Option Plan [Member] | Subsequent Event [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) 2,200,000        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares) 200,000        
Stock Incentive Plan [Member]          
Share-based Payment Arrangement, Expense       $ 281,000 271,000
Share-based Payment Arrangement, Expense, after Tax       215,000 $ 201,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)   450,000      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares)   100,000      
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total       $ 6,200,000  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)       6 years 1 month 6 days  
Stock Incentive Plan [Member] | Restricted Stock [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)       2,000 3,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)       92,199  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number, Ending Balance (in shares)       186,828  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)       $ 49.88