XML 78 R38.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stock-Based Compensation Plans (Details 2) (USD $)
In Thousands, except Share data, unless otherwise specified
 9 Months Ended 12 Months Ended
Sep. 30, 2012
Dec. 31, 2011
Summary of stock option activity    
Balance at December 31, 2011, Shares 7,203,784  
Options granted, Shares 310,400  
Options forfeited, Shares (500,205)  
Options expired, Shares (367,157)  
Options exercised, Shares (6,556)  
Balance at September 30, 2012 , Shares 6,640,266 7,203,784
Beginning Balance, Weighted average exercise price $ 8.24  
Options granted, Weighted average exercise price $ 3.88  
Options forfeited, Weighted average exercise price $ 7.10  
Options expired, Weighted average exercise price $ 11.28  
Options exercised, Weighted average exercise price $ 4.13  
Ending Balance, Weighted average exercise price $ 7.96 $ 8.24
Beginning Balance, Weighted average remaining contractual term (in years) 6 years 4 months 6 days 6 years 9 months 22 days
Beginning Balance, Aggregate intrinsic value $ 5,971  
Ending Balance, Weighted average remaining contractual term (in years) 6 years 4 months 6 days 6 years 9 months 22 days
Ending Balance, Aggregate intrinsic value $ 332 $ 5,971