Note 6 - Inventories (Tables)

3 Months Ended

Jun. 30, 2016

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	June 30, 2016		March 31, 2016
Raw materials	$	703,983	$	810,987
Work in process		1,880,969		1,653,800
Finished goods		601,498		740,446
Total inventories	$	3,186,450	$	3,205,233