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Inventories (Details) (USD $) In Thousands, unless otherwise specified			3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 U.S.	Mar. 31, 2013 Minimum Outside U.S.	Mar. 31, 2013 Maximum Outside U.S.
Major classes of inventories
Raw materials	$ 2,882	$ 2,652
Work in process	2,022	2,524
Finished goods	6,388	7,275
Total inventories	$ 11,292	$ 12,451
Shelf-life of Feraheme/Rienso
Shelf-life of Feraheme/Rienso			5 years	2 years	3 years

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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