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Note 7 - Inventories (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Raw material $ 226,110 $ 188,354
Work-in-process 4,347 2,856
Finished goods 150,032 144,747
Reserves for excess and obsolete (13,744) (10,582)
Total $ 366,745 $ 325,375