Note 12 - Income Taxes (Detail) - The provision for income taxes is as follows: (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Current:
Federal	$ 820,000	$ 195,000
State	146,000	41,000
Foreign	69,000	105,000
Total current	1,035,000	341,000
Deferred:
Federal	21,000	347,000
State	4,000	58,000
Total deferred	25,000	405,000
Total	$ 1,060,000	$ 746,000