Note 17 - Income Taxes - Provision for Income Taxes (Details) - USD ($)	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Current:
Federal	$ 1,817,000	$ 1,209,000
State	316,000	159,000
Foreign	171,000	(65,000)
Total current	2,304,000	1,303,000
Deferred:
Federal	152,000	(315,000)
State	(61,000)	(57,000)
Total deferred	90,484	(372,000)
Total	$ 2,395,452	$ 931,000