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Note 17 - Share-Based and Other Compensation Plans (Non-Qualified Stock Options) (Details) (Equity Compensation Plan, 1995 and 2008 [Member], USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Available for grant 1,329,689    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Share-based Compensation Arrangement by Share-based Payment Award, Vesting Percentage of Total Award, Third Anniversary 50.00%    
Share-based Compensation Arrangement by Share-based Payment Award, Vesting Percentage of Total Award, Fourth Anniversary 50.00%    
Stock Options [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term 1 year 4 months 20 days    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Outstanding, Beginning of Period, Number of Shares 3,472,762    
Outstanding, Beginning of Period, Weighted Average Exercise Price Per Share $ 23.97    
Granted, Number of Shares 1,312,590    
Granted, Weighted Average Exercise Price Per Share $ 2.45    
Exercised, Number of Shares 0 0 0
Exercised, Weighted Average Exercise Price Per Share $ 0.00    
Forfeited, Number of Shares (18,342)    
Forfeited, Weighted Average Exercise Price Per Share $ 6.43    
Expired, Number of Shares (364,666)    
Expired, Weighted Average Exercise Price Per Share $ 45.73    
Outstanding, End of Period, Number of Shares 4,402,344 3,472,762  
Outstanding, Beginning of Period, Weighted Average Exercise Price Per Share $ 15.82 $ 23.97  
Exercisable, Number of Shares 2,267,857    
Exercisable, Weighted Average Exercise Price Per Share $ 27.24    
Available for grant 1,329,689    
Weighted average fair value per share of stock options granted $ 1.92 $ 3.33 $ 8.70
Total intrinsic value of options outstanding $ 7,800,000 $ 0 $ 2,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]      
Fair value of options vested during the year 300,000    
Aggregate intrinsic value (excess market price over exercise price) 0    
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]      
Risk-free interest rate 1.66% [1] 1.88% [1] 2.85% [1]
Volatility 96.97% [2] 114.51% [2] 110.83% [2]
Dividend yield 0.41% 0.28% 0.10%
Vesting period (in years) 4 years    
Share-based Compensation Arragements, Windfall Tax Benefit, Threshold Amount $ 18,300,000    
[1] The risk-free interest rate is based on the U.S. Treasury yield curve in effect at the time of grant.
[2] Volatility is determined at the date of grant using historical share price volatility and expected life of each award.