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Note N - Earnings Per Share - Restricted Stock Units (Details) - shares
3 Months Ended 6 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Restricted Stock Units (RSUs) [Member]        
Restricted Stock Units (in shares) 72,910 76,811 67,712 73,211