Annual report pursuant to section 13 and 15(d)

Stock Compensation Plans (A Summary Of The Status Of 1999 Plan) (Detail)

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Stock Compensation Plans (A Summary Of The Status Of 1999 Plan) (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Options outstanding 4,475,000 4,475,000 5,764,000  
Exercised     (639,000)  
Forfeited     (650,000)  
Options outstanding 4,475,000 4,475,000 4,475,000 5,764,000
Vested or expected to vest 4,475,000 4,475,000 4,475,000  
Options exercisable 4,475,000 4,475,000 4,475,000  
Options outstanding $ 1.63 $ 1.63 $ 1.39  
Exercised     $ 0.47  
Forfeited     $ 0.66  
Options outstanding $ 1.63 $ 1.63 $ 1.63 $ 1.39
Vested or expected to vest $ 1.63 $ 1.63 $ 1.63  
Options exercisable $ 1.63 $ 1.63 $ 1.63  
Options outstanding 4 years 5 months 9 days 4 years 5 months 9 days 4 years 5 months 9 days 6 years 11 months 19 days
Options outstanding $ 516 $ 516 $ 112  
Options outstanding 516 516 516 112
Vested or expected to vest 516      
Options exercisable 516      
Plan 1999 [Member]
        
Options outstanding 17,765,468 17,195,240 15,117,290  
Granted 500,000 1,655,000 3,200,000  
Exercised (881,500) (634,772) (706,050)  
Forfeited (35,000) (65,000) (416,000)  
Expired (46,500) (385,000) 0  
Options outstanding 17,302,468 17,765,468 17,195,240 15,117,290
Vested or expected to vest 17,287,184      
Options exercisable 14,013,718      
Options outstanding $ 1.36 $ 1.38 $ 1.46  
Granted $ 2.80 $ 1.27 $ 0.9  
Exercised $ 0.88 $ 0.88 $ 0.59  
Forfeited $ 1.90 $ 1.73 $ 1.96  
Expired $ 0.27 $ 2.72 $ 0  
Options outstanding $ 1.43 $ 1.36 $ 1.38 $ 1.46
Vested or expected to vest $ 1.43      
Options exercisable $ 1.45      
Options outstanding 5 years 4 months 6 days 6 years 11 days 6 years 6 months 11 days 6 years 10 months 28 days
Vested or expected to vest 5 years 4 months 2 days      
Options exercisable 4 years 9 months 11 days      
Options outstanding 19,977 2,980 200  
Options outstanding 4,475 19,977 2,980 200
Vested or expected to vest 4,473      
Options exercisable $ 3,511