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Share Based Compensation (Details 2) (USD $)
In Thousands, except Share data, unless otherwise specified
 9 Months Ended 12 Months Ended
Sep. 30, 2012
Dec. 31, 2011
Stock option transactions under all plans    
Options outstanding at December 31, 2011 864,238  
Changes during the period:    
Changes during the period option granted 35,000  
Changes during the period options exercised     
Changes during the period, forfeited, cancelled or expired of options (23,285)  
Options outstanding at September 30, 2012 875,953 864,238
Options exercisable at September 30, 2012, No of Options 723,337  
Options vested and expected to vest, No of Options 867,085  
Options outstanding at December31, 2011, Weighted Average Exercise Price $ 3.20  
Changes during the period weighted average exercise price    
Changes during the period granted Weighted Average Exercise Price $ 1.00  
Changes during the period exercised Weighted Average Exercise Price     
Changes during the period Forfeited, cancelled or expired, Weighted Average Exercise Price $ 5.82  
Options outstanding at September 30, 2012, Weighted Average Exercise Price $ 3.04 $ 3.20
Options exercisable at September 30, 2012, Weighted Average Exercise Price $ 3.14  
Options vested and expected to vest, Weighted Average Exercise Price $ 3.04  
Weighted Average Remaining Contractual Term (in years) Options Outstanding 5 years 5 months 23 days 6 years 9 months 26 days
Options exercisable at September 30, 2012, Weighted Average Remaining Contractual Term (in years) 4 years 11 months 27 days  
Options vested and expected to vest, Weighted Average Remaining Contractual Term (in years) 5 years 5 months 19 days  
Options outstanding at December 31, 2011, Aggregate Intrinsic Value $ 23,894  
Options outstanding at September 30, 2012, Aggregate Intrinsic Value 318 23,894
Options exercisable at September 30, 2012, Aggregate Intrinsic Value 318  
Options vested and expected to vest, Aggregate Intrinsic Value $ 318