Commitments And Contingencies (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Commitments And Contingencies [Abstract]
Initial fair value of future consideration to be paid	$ 8,000	$ 0
Contractual non-compliance liabilities incurred by Simena	$ 1,600

Fair value, as of the acquisition date, of potential payments under the contingent consideration arrangement including cash and shares.

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+ Details