Note 8 - Income Taxes - Uncertain Tax Positions (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Beginning balance	$ 855	$ 715
Additions	26	9
Additions		154
Reductions	(2)	(23)
Lapses in statues of limitations	(483)
Balance as of March 31,	$ 396	$ 855

Amount of unrecognized tax benefits.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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