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Note 6 - Inventories (Details) - USD ($)
Jun. 30, 2015
Dec. 31, 2014
Raw materials $ 7,760,000 $ 6,436,000
Work in process 5,147,000 4,834,000
Finished goods 6,311,000 5,274,000
$ 19,218,000 $ 16,544,000 [1]
[1] The condensed consolidated balance sheet as of December 31, 2014 has been prepared using information from the audited consolidated balance sheet as of that date.