Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Stock-based Compensation (Details Textual)

v3.24.0.1
Note 7 - Stock-based Compensation (Details Textual) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended
Dec. 31, 2023
Dec. 31, 2023
Dec. 31, 2022
Jun. 30, 2023
Jun. 30, 2023
Share-Based Payment Arrangement, Expense   $ 1,271,000 $ 660,000    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $ 8,668,000 $ 8,668,000      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition   2 years 10 months 24 days      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross   111,299 15,020    
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)   5 years      
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   3 years     3 years
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)   $ 26.18 $ 104.36    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term (Year) 2 years 1 month 20 days        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value $ 1,258,000 $ 1,258,000      
Employee Stock Purchase Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Market Price Percentage, Offering Date         85.00%
Stock Issued During Period, Shares, Employee Stock Purchase Plans       10,104  
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price       $ 24.72  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant       158,147 158,147
Share-Based Payment Arrangement, Option [Member] | Minimum [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   3 years      
Share-Based Payment Arrangement, Option [Member] | Maximum [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   5 years      
Restricted Stock [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)         121,884
Restricted Stock [Member] | Share-Based Payment Arrangement, Employee [Member] | The 2022 Plan [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   3 years      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)   121,884 8,686    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Intrinsic Value, Amount Per Share (in dollars per share)   $ 26.18 $ 104.36    
Bonus Stock Award [Member] | Share-Based Payment Arrangement, Employee [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)         9,144
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Intrinsic Value, Amount Per Share (in dollars per share)         $ 104.36
Selling, General and Administrative Expenses [Member]          
Share-Based Payment Arrangement, Expense   $ 1,227,000 $ 625,000    
Cost of Sales [Member]          
Share-Based Payment Arrangement, Expense   $ 44,000 $ 35,000