XML 87 R62.htm IDEA: XBRL DOCUMENT v3.21.2
Note 9 - Income Taxes - Reconciliation of Federal Statutory Income Tax Rate to Effective Tax Rate (Details)
12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Income tax expense (benefit) at U.S. federal statutory rate 21.00% (21.00%)
Current year state and local income taxes net of federal income tax benefit 4.10% (2.40%)
Other (0.10%) 0.20%
Provision for (benefit from) income taxes 25.00% (23.20%)