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Note 7 - Inventories (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Raw material $ 223,346 $ 188,354
Work-in-process 5,836 2,856
Finished goods 159,112 144,747
Reserves for excess and obsolete (13,585) (10,582)
Total $ 374,709 $ 325,375