Business Combinations (Details 1) (GTI Diagnostics [Member], USD $) In Thousands	Jun. 30, 2011
Fair values of the acquired identifiable intangible assets
Fair values of the acquired identifiable intangible assets	$ 32,100
In-Process Research And Development [Member]
Fair values of the acquired identifiable intangible assets
Fair values of the acquired identifiable intangible assets	11,900
Patents [Member]
Fair values of the acquired identifiable intangible assets
Fair values of the acquired identifiable intangible assets	10,600
Customer Relationships [Member]
Fair values of the acquired identifiable intangible assets
Fair values of the acquired identifiable intangible assets	3,500
Trademarks And Trade Names [Member]
Fair values of the acquired identifiable intangible assets
Fair values of the acquired identifiable intangible assets	$ 6,100