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Hemosphere Acquisition (Summary Of Unaudited Pro Forma Results Of Operations) (Details) (Hemosphere [Member], USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Hemosphere [Member]
Business Acquisition [Line Items]
Total revenues	$ 133,722	$ 124,877
Net income	$ 8,758	$ 3,205
Pro forma income per common share-basic	$ 0.32	$ 0.11
Pro forma income per common share-diluted	$ 0.31	$ 0.11

- Definition

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References+ Details

- Definition

The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References+ Details