Note 6 - Inventories (Tables)

6 Months Ended

Sep. 30, 2017

Notes Tables

Schedule of Inventory, Current [Table Text Block]

	September 30,		March 31,
	2017		2017
	(unaudited)
Raw materials	$	20,870	$	17,920
Work in process		50,389		45,634
Finished goods		24,685		25,882
Total	$	95,944	$	89,436