XML 54 R44.htm IDEA: XBRL DOCUMENT v3.19.3
Note 6 - Stock-based Compensation Plans (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Feb. 19, 2019
Feb. 20, 2018
May 20, 2009
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
May 22, 2019
May 20, 2019
Restricted Stock [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period           9,750      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value           $ 52.09      
Share-based Payment Arrangement, Expense       $ 72,000 $ 47,000 $ 190,000 $ 153,000    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period           6,900 4,200    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value           $ 353,000 $ 171,000    
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total       $ 1,000,000   $ 1,000,000      
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition           4 years 273 days      
Restricted Stock [Member] | Officers, Directors and Key Employees [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 9,750 20,000              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 52.09 $ 37.42              
Stock Issued During Period, Value, Restricted Stock Award, Gross $ 508,000 $ 748,000              
Restricted Stock [Member] | Officers, Directors and Key Employees [Member] | Share-based Payment Arrangement, Tranche One [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage 20.00%                
Restricted Stock [Member] | Officers, Directors and Key Employees [Member] | Vesting Each Year on July 1, Beginning in 2019 [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage   20.00%              
Equity Incentive Plan 2009 [Member] | Common Stock [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized     223,000            
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant                 176,150
Equity Incentive Plan 2019 [Member]                  
Maximum Fair Value of First Exercisable Stock Incentive Options     $ 100,000            
Equity Incentive Plan 2019 [Member] | Common Stock [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized               176,150  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant       176,150   176,150      
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period     10 years            
Equity Incentive Plans [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross           0