Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details 2)

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Inventories (Details 2) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Mar. 31, 2013
Dec. 31, 2017
Forecast
Dec. 31, 2016
Forecast
Dec. 31, 2015
Forecast
Non-current Inventory Balance $ 2,995 $ 3,252 $ 255 $ 461 $ 2,279