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Inventories (Details) (USD $)			12 Months Ended
Inventories (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Cost of goods sold	Dec. 31, 2012 Research and development expenses	Dec. 31, 2012 Restructuring costs	Dec. 31, 2012 Minimum U.S.	Dec. 31, 2012 Minimum Outside U.S.	Dec. 31, 2012 Maximum U.S.	Dec. 31, 2012 Maximum Outside U.S.
Major classes of inventories
Raw materials	$ 2,652,000	$ 1,892,000
Work in process	2,524,000	3,696,000
Finished goods	7,275,000	9,618,000
Total inventories	12,451,000	15,206,000
Shelf-life of Feraheme/Rienso
Shelf-life of Feraheme/Rienso						4 years	2 years	5 years	3 years
Inventory write-off			$ 600,000	$ 600,000	$ 700,000

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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- Definition

Charge to cost of goods sold that represents the reduction of the carrying amount of inventory, generally attributable to obsolescence or market conditions.

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