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Note 12 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Income Tax Expense (Benefit), Total | $ (1,546) | $ 112 | $ (1,166) | $ 29
Deferred Tax Liabilities, Acquisition | 1,700 |  | 1,700 |
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount | 1,700 |  | 1,700 |
Liability for Uncertainty in Income Taxes, Current | 0 |  | 0 |
Unrecognized Tax Benefits, Ending Balance | $ 0 |  | $ 0 |
Maximum [Member] |  |  |  |
Income Tax Expense (Benefit), Total |  |  |  | $ 100

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