Annual report [Section 13 and 15(d), not S-K Item 405]

Note 10 - Equity Incentive Plan (Details Textual)

v3.25.1
Note 10 - Equity Incentive Plan (Details Textual) - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $ 2,282,686  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition 1 year 1 month 6 days  
Restricted Stock Units (RSUs) [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period 292,632 87,750
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) 130,447 99,886
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation 34,150 27,869
Share-Based Payment Arrangement, Option [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period 10 years  
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period 3 years  
Share-Based Payment Arrangement, Option [Member] | Director [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period 1 year  
The 2013 Equity Incentive Plan [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant 256,267  
Share Based Compensation Arrangement By Share Based Payment Award, Grants In Period, Fair Value $ 2,072,676 $ 915,789
Share-Based Payment Arrangement, Expense 541,957 $ 363,563
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value $ 1,000,000  
The 2013 Equity Incentive Plan [Member] | Share-Based Payment Arrangement, Employee [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross   12,000
The 2013 Equity Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Executive Officer [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted 125,000  
The 2013 Equity Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Nonemployee [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted 38,710  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period   27,550
The 2013 Equity Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Employee [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted 128,922  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period   60,200