Note 13 - Provision for Income Taxes (Details) (USD $)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Current:
Federal	$ 1,209,000	$ 36,000
State	159,000	176,000
Foreign	(65,000)	69,000
Total current	1,303,000	281,000
Deferred:
Federal	(315,000)	779,000
State	(57,000)	132,000
Deferred income taxes	(372,000)	911,000
Total	$ 931,000	$ 1,192,000