Note 4 - Inventories

3 Months Ended

Jun. 30, 2018

Notes to Financial Statements

Inventory Disclosure [Text Block]

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4

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 Inventories

Inventories consisted of the following:

(In thousands)	June 30 , 201 8		March 31 , 201 8
Raw materials	$	1,147	$	2,290
Work-in-progress		1,749		2,100
Finished goods		81		561
Demonstration inventory		461		536
Total	$	3,438	$	5,487