Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Comprehensive Loss (Parenthetical)

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Condensed Consolidated Statements of Comprehensive Loss (Parenthetical) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Unrealized gain (loss) on marketable securities, tax $ 123 $ 0