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Income Taxes (Details 1) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Current:    
Federal $ 0 $ 176
State 141 11
Foreign 1,236 1,926
Total current income tax expense 1,377 2,113
Deferred:    
Federal 0 0
State 0 0
Foreign 871 508
Total deferred income tax expense . 871 508
Total income tax expense (benefit) $ 2,248 $ 2,621