XML 27 R15.htm IDEA: XBRL DOCUMENT v3.10.0.1
INVENTORIES
6 Months Ended
Sep. 30, 2018
Inventory Disclosure [Abstract]  
INVENTORIES
INVENTORIES
Inventories are stated at the lower of actual cost or net realizable value. Cost is determined by using the first in, first out (FIFO) method. Inventories consist of the following (in thousands):

September 30,
2018
 
March 31,
2018
Raw materials
$
18,457

 
$
20,860

Work in process
717

 
2,589

Finished goods
7,427

 
8,500

Deferred costs
4,384

 
2,825


$
30,985

 
$
34,774