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Note 11 - Share Based Compensation And Employee Benefit Plans (Details) (USD $)
 11 Months Ended 12 Months Ended 13 Months Ended 12 Months Ended 11 Months Ended 13 Months Ended 11 Months Ended 13 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Jan. 31, 2012
Dec. 31, 2013
Per Year [Member]
Common Class A [Member]
The 2007 Long-Term Incentive Plan [Member]
Dec. 31, 2013
Per Year [Member]
Common Class B [Member]
The 2007 Long-Term Incentive Plan [Member]
Dec. 31, 2013
Restricted Stock [Member]
Dec. 31, 2013
Every Six Months [Member]
Employee Stock Purchase Plan [Member]
Dec. 31, 2012
Employees With Less Than Five Years Of Service [Member]
Jan. 31, 2012
Employees With Less Than Five Years Of Service [Member]
Dec. 31, 2012
Employees With More Than Five Years Of Service [Member]
Jan. 31, 2012
Employees With More Than Five Years Of Service [Member]
Dec. 31, 2013
Common Class A [Member]
The 2007 Long-Term Incentive Plan [Member]
May 18, 2010
Common Class A [Member]
The 2007 Long-Term Incentive Plan [Member]
Dec. 31, 2013
Common Class B [Member]
The 2007 Long-Term Incentive Plan [Member]
May 18, 2010
Common Class B [Member]
The 2007 Long-Term Incentive Plan [Member]
Dec. 31, 2013
Employee Stock Purchase Plan [Member]
Dec. 31, 2012
Employee Stock Purchase Plan [Member]
Dec. 31, 2013
The 2006 Non-Employee Director Stock Option Plan [Member]
Dec. 31, 2012
The 2006 Non-Employee Director Stock Option Plan [Member]
May 18, 2010
The 2006 Non-Employee Director Stock Option Plan [Member]
May 16, 2006
The 2006 Non-Employee Director Stock Option Plan [Member]
Dec. 31, 2013
The 2007 Long-Term Incentive Plan [Member]
Dec. 31, 2012
The 2007 Long-Term Incentive Plan [Member]
Dec. 31, 2013
Highly Compensated Employees [Member]
Dec. 31, 2013
Shares Issued to Three Non-Employee Directors [Member]
Dec. 31, 2013
Shares Issued to One Non-Employee Director [Member]
Dec. 31, 2013
Minimum [Member]
Dec. 31, 2013
Maximum [Member]
Note 11 - Share Based Compensation And Employee Benefit Plans (Details) [Line Items]                                                            
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount                 $ 10,625                                          
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent                                   85.00%                        
Maximum Fair Value for Employee Stock Purchase Per Year                                   25,000                        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in Shares)           100,000 100,000             765,000   209,000   314,000     239,000                  
Common Stock, Capital Shares Reserved for Future Issuance (in Shares)                                   900,000                        
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in Shares)                                   79,681 70,998                      
Number Of Employees Eligible To Participate In Stock Purchase Plan                                   5,295                        
Number Of Employees Participating In Stock Purchase Plan                                   659                        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)                           4,550,000 4,550,000   450,000       500,000   1,500,000              
Reduction in Number of Shares Reserved for Issuance (in Shares)                                           1,000,000                
Number of Shares Available for Purchase with Options by Non-Employee Director Each Year (in Shares)   20,000                                                        
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period   10 years                                           10 years            
Issuance of Stock and Warrants for Services or Claims   125,000 125,000                                 125,000                    
Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued (in Shares)     7,901                                               4,512 2,707    
Payment to Non-Employee Directors                                       50,000                    
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures (in Shares)                                       16,243 31,604                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in Shares)   400,633                                           400,633 636,320          
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in Shares)               258,173                               241,930 129,635          
Share-based Compensation   8,645,000 7,332,000 5,683,000                                                    
Proceeds from Stock Options Exercised   10,000,000 5,100,000 5,500,000                                                    
Share Price (in Dollars per share) $ 29.65   $ 29.65                                                      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value   10,500,000 5,600,000 5,200,000                                                    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value   3,400,000 2,400,000 2,500,000                                                    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)   $ 12.69 $ 10.95 $ 8.68                                                    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights   three                                                        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value               3,800,000                                            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in Dollars per share)   $ 22.12 $ 21.98 $ 18.93       $ 22.12                                            
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized   12,800,000                                                        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition   2 years 255 days                                                        
Contribution Plan Period For Eligibility   90 days                                                        
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent 10.00%       10.00%                                         15.00%     1.00% 50.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Match                   20.00% 15.00% 40.00% 30.00%                                  
Defined Contribution Plan, Cost Recognized   4,400,000 3,700,000 2,200,000                                                    
Deferred Compensation Arrangement With Individual, Vested Percentage   100.00%                                                        
Deferred Compensation Liability, Current 600,000 1,700,000 600,000                                                      
Cash Surrender Value of Life Insurance $ 600,000 $ 1,600,000 $ 600,000