Quarterly report pursuant to Section 13 or 15(d)

Inventories (Details)

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Inventories (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Dec. 31, 2011
Summary of inventories    
Raw materials $ 5,885 $ 5,624
Work in process 4,359 3,912
Finished goods 4,062 3,861
Provision for slow moving inventory (587) (568)
Total $ 13,719 $ 12,829