v3.26.1
Note 17 - Stockholders' Equity (Details Textual) - USD ($)
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Aug. 02, 2024
Aug. 01, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) 2,112 0      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) 926,445        
Share-Based Payment Arrangement, Expense $ 15,869,000 $ 7,794,000 $ 4,652,000    
Share-Based Payment Arrangement, Option [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 2 years        
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $ 100,000        
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) 1 year 2 months 12 days        
Share-Based Payment Arrangement, Expense $ 17,000 8,000 40,000    
Restricted Stock [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Grant Date Fair Value 22,100,000 $ 19,600,000      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $ 21,500,000        
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year) 1 year 7 months 6 days        
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture (in shares) 887,000 872,500      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value $ 24,300,000 $ 10,700,000      
Share-Based Payment Arrangement, Expense $ 15,794,000 $ 7,732,000 4,563,000    
Restricted Stock [Member] | Minimum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 2 years        
Restricted Stock [Member] | Maximum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 3 years        
Immediately Vested Common Stock [Member]          
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture (in shares) 39,445 19,200      
Performance Shares [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 3 years 3 years      
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) 310,000 250,000      
The 2022 Stock Incentive Plan [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)       4,400,000 1,150,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) 1,537,412        
The 2007 Director Plan [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)       580,000 430,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 2 years        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Fair Value $ 40,000        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Grant Date Fair Value $ 100,000        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) 238,289        
The 2007 Plan [Member] | Share-Based Payment Arrangement, Option [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year) 10 years        
The 2007 Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Minimum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 3 years        
The 2007 Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Maximum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 5 years        
The 2007 Plan [Member] | Restricted Stock [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 3 years        
Employee Stock Purchase Plan [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) 39,977        
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date   15.00%      
Share-Based Payment Arrangement, Expense $ 100,000 $ 100,000 $ 100,000