Note 16 - Income Taxes - Income Taxes Provision Breakdown (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Current:
Federal	$ 406	$ 1,418	$ 201
State	(560)	126	83
Foreign	4,532	3,436	5,066
Current Income Tax Expense (Benefit)	4,378	4,980	5,350
Deferred:
Federal	1,867	3,554	945
State	1,256	189	20
Foreign	51	25	375
Deferred Income Tax Expense (Benefit)	3,174	3,768	1,340
Total provision for income tax	$ 7,552	$ 8,748	$ 6,690