Quarterly report pursuant to Section 13 or 15(d)

Inventories - Current (Details)

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Inventories - Current (Details) - USD ($)
$ in Thousands
6 Months Ended
Sep. 30, 2017
Mar. 31, 2017
Inventories    
Raw materials $ 14,436 $ 15,035
Work in process 290  
Finished goods 2,542 464
Total 17,268 15,499
Less non-current portion (994) (961)
Current portion $ 16,274 $ 14,538
Weighted average age of noncurrent inventories 1 year 7 months 6 days