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Fair Value (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Beginning balance - stock option liability $ 39 $ 541 $ 502 $ 811
Unrealized loss (gain) included in net income (loss) (1) (39) [1] (348) [1] (502) [1] (618) [1]
Ending balance- stock option liability $ 0 $ 193 $ 0 $ 193
[1] Included as a component of non-operating income (expense).