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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Current      
Federal $ 0 $ 0 $ 29
State 7 10 24
Deferred      
Federal 0 0 (29)
State (7) (10) (24)
Total $ 0 $ 0 $ 0