Note 5 - Inventory (Details) - USD ($)	Jun. 30, 2015	Mar. 31, 2015
Ground support service parts	$ 972,949	$ 938,072
Raw materials	3,261,794	2,583,797
Work in process	1,654,867	1,535,152
Finished goods	5,942,274	3,045,761
Total inventories	11,831,884	8,102,782
Reserves	(332,182)	(313,133)
Total, net of reserves	$ 11,499,702	$ 7,789,649