v3.26.1
Note 8 - Income Taxes - Reconciliation of Income Tax Rate (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
U.S. federal statutory rate, amount $ 31,310    
U.S federal statutory rate, percent 21.00% 21.00% 21.00%
State income taxes (net of federal tax benefit)(1), amount [1] $ 5,388    
State income taxes (net of federal tax benefit) 3.60% [1] 3.90% 3.60%
State income taxes (net of federal tax benefit) (1), percent 3.60% [1] 3.90% 3.60%
Effect of cross border tax laws, amount $ (304)    
Tax credits, percent (0.30%) (0.80%) (0.60%)
Effect of cross border tax laws, percent (0.20%)    
Tax credits, amount $ (416)    
State rate changes   (0.00%) (0.20%)
Non-taxable or non-deductible items, amount $ (1,222)    
State credit expiration   0.90% 0.00%
Non-taxable or non-deductible items, percent (0.80%)    
Changes in unrecognized tax benefits, amount $ (438)    
State return to accrual   1.40% 0.50%
Changes in unrecognized tax benefits, percent (0.30%)    
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount $ 103    
Change in valuation allowance   (2.10%) (0.20%)
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent 10.00% 0.00% (0.40%)
Total income taxes $ 34,421 $ 13,259 $ 19,681
Other 10.00% 0.00% (0.40%)
Total, percent 23.10% 24.30% 23.70%
[1] State and local taxes in California, Illinois, and Pennsylvania comprise the majority of this category.