Quarterly report pursuant to Section 13 or 15(d)

Inventories - Current (Details)

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Inventories - Current (Details) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2018
Mar. 31, 2018
Inventories    
Raw materials $ 19,567 $ 17,981
Work in process 46 111
Finished goods 3,080 4,076
Total 22,693 22,168
Less inventory reserve (5,535) (5,494)
Less non-current portion (1,103) (1,041)
Current portion $ 16,055 $ 15,633
Weighted average age of noncurrent inventories 1 year 4 months 24 days