Related Party Transactions (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Royalty [Member]
Related Party Transactions (Textual) [Abstract]
Amounts owed to related parties	$ 0.7		$ 0.7		$ 0.7
Payments made to related parties	0.7	0.5	1.3	1.0
Manufacturing Costs [Member]
Related Party Transactions (Textual) [Abstract]
Amounts owed to related parties	2.7		2.7		3.4
Payments made to related parties	$ 3.9	$ 4.1	$ 7.5	$ 6.3
Platelet system [Member] | Royalty [Member]
Related Party Transactions (Textual) [Abstract]
Royalty rate applied towards sale of products			10.00%
Plasma system [Member] | Royalty [Member]
Related Party Transactions (Textual) [Abstract]
Royalty rate applied towards sale of products			3.00%
Red blood cell system [Member] | Royalty [Member]
Related Party Transactions (Textual) [Abstract]
Royalty rate applied towards sale of products			5.00%
Illuminators [Member] | Royalty [Member]
Related Party Transactions (Textual) [Abstract]
Royalty rate applied towards sale of products			6.50%