Inventories (Details) - USD ($)	Sep. 30, 2015	Mar. 31, 2015
Inventories [Abstract]
Raw materials	$ 3,502,000	$ 3,156,000
Work-in-process	38,000	527,000
Finished goods	1,424,000	1,143,000
Inventories	$ 4,963,630	4,825,984
Inventory adjustment		$ 240,000