Note 14 - Income Taxes - Components of Net Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Mar. 31, 2020
Net operating loss	$ 8,990	$ 8,874
Stock compensation deductible differences	2,099	1,265
Inventories	838	504
Allowances and reserves	1,471	105
Accrued employee-related expenses	209	208
Credits	169	47
Other	25	458
Total deferred tax assets	13,801	11,461
Goodwill and intangible assets	(23,029)	(24,825)
Debt	(4,723)	(5,982)
Property, plant and equipment	(1,275)	(1,286)
Other	(29)	(65)
Total deferred tax liabilities	(29,056)	(32,158)
Valuation allowance	(404)	(391)
Net deferred tax liability	$ (15,659)	$ (21,088)

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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