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Share Based Compensation (Details 2) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2012
Stock option transactions under all plans    
Options outstanding at December31, 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   15,668
Options outstanding at June30, 2012 864,238 864,238
Options exercisable at June30, 2012, No of Options 692,698 692,698
Options vested and expected to vest, No of Options 872,641 872,641
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   $ 4.91
Options outstanding at June 30, 2012, Weighted Average Exercise Price $ 3.08 $ 3.08
Options exercisable at June 30, 2012, Weighted Average Exercise Price $ 3.20 $ 3.20
Options vested and expected to vest, Weighted Average Exercise Price $ 3.09 $ 3.09
Weighted Average Remaining Contractual Term (in years) Options Outstanding 6 years 9 months 26 days 6 years 6 months 15 days
Options exercisable at June 30, 2012, Weighted Average Remaining Contractual Term (in years)   6 years 1 month 13 days
Options vested and expected to vest, Weighted Average Remaining Contractual Term (in years)   6 years 6 months 11 days
Options outstanding at December 31, 2011, Aggregate Intrinsic Value   $ 23,894
Options outstanding at June 30, 2012, Aggregate Intrinsic Value 461 461
Options exercisable at June 30, 2012, Aggregate Intrinsic Value 461 461
Options vested and expected to vest, Aggregate Intrinsic Value $ 461 $ 461