Note 4 - Inventories, net (Details) - Schedule of Inventory, Current (USD $)	Sep. 30, 2014	Mar. 31, 2014
Schedule of Inventory, Current [Abstract]
Purchased parts	$ 3,375,294	$ 3,085,070
Work-in-process	1,333,415	1,134,714
Finished goods	45,558	10,607
Less: Inventory reserve	(210,000)	(205,000)
	$ 4,544,267	$ 4,025,391