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Note 12 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Expense (Benefit), Total	$ 181	$ 191	$ (1,947)	$ 380
Deferred Tax Liabilities, Other Finite-Lived Assets	2,300		2,300
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount			(2,300)
Liability for Uncertainty in Income Taxes, Current	0		0
Unrecognized Tax Benefits, Ending Balance	$ 0		$ 0

X

- Definition

Amount of deferred tax liability attributable to taxable temporary differences from long-lived assets other than property, plant, and equipment.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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