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Income Taxes, Unrecognized Tax Benefits (Details) - USD ($)
 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Unrecognized tax benefits [Roll Forward]      
Balance at beginning of period $ 1,104,000 $ 1,011,000 $ 1,083,000
Additions based on tax positions related to the current year 352,000 249,000 362,000
Additions for tax positions of prior year 581,000 67,000 0
Reductions for tax positions of prior year (62,000) (223,000) (434,000)
Balance at end of period 1,975,000 1,104,000 1,011,000
Unrecognized tax benefits that would impact effective tax rate 1,632,000 923,000 823,000
Recognized interest and penalties 112,000 (16,000) $ (50,000)
Interest and penalties accrued $ 170,000 $ 58,000