Quarterly report pursuant to Section 13 or 15(d)

Inventories - Current (Details)

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Inventories - Current (Details) - USD ($)
$ in Thousands
9 Months Ended
Dec. 31, 2018
Mar. 31, 2018
Inventories    
Raw materials $ 21,888 $ 17,981
Work in process 2 111
Finished goods 1,426 4,076
Total 23,316 22,168
Less inventory reserve (3,858) (5,494)
Less non-current portion (1,083) (1,041)
Current portion $ 18,375 $ 15,633
Weighted average age of noncurrent inventories 1 year 2 months 12 days