Note 6 - Stockholder's Equity (Details) - RSU Summary (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Note 6 - Stockholder's Equity (Details) - RSU Summary [Line Items]      
Outstanding at January 1, 2011 1,629,748 1,299,556 960,174
Outstanding at January 1, 2011 (in Dollars per share) $ 17.46 $ 16.87 $ 19.88
Stock Unit 3,582,088 1,629,748 1,299,556
Weighted Average Grant Date Fair Value Per Share (in Dollars per share) $ 22.53 $ 17.46 $ 16.87
Awards modification (1) (in Dollars)      [1]  
Awards modification (1) (in Dollars)      [1]  
Stock Units 2,973,714 [2] 1,579,880 [2],[3] 853,480
Weighted Average Grant Date Fair Value Per Share (in Dollars per share) $ 23.89 [2] $ 18.42 [2],[3] $ 14.40
Stock Units (in Dollars) (124,141) [4] (624,403) [4]  
Weighted Average Grant Date Fair Value Per Share (in Dollars) 21.98 [4] 18.19 [4]  
Stock Unit (724,961) (543,596) (413,101)
Weighted Average Grant Date Fair Value Per Share (in Dollars per share) $ 17.95 $ 17.91 $ 18.51
Stock Unit (172,272) (81,689) (100,997)
Weighted Average Grant Date Fair Value Per Share (in Dollars per share) $ 17.61 $ 1,674 $ 18.95
Time-Based RSUs [Member]
      
Note 6 - Stockholder's Equity (Details) - RSU Summary [Line Items]      
Outstanding at January 1, 2011 1,098,563 1,082,431 616,549
Outstanding at January 1, 2011 (in Dollars per share) $ 16.96 $ 16.00 $ 19.41
Stock Unit 754,306 1,098,563 1,082,431
Weighted Average Grant Date Fair Value Per Share (in Dollars per share) $ 19.41 $ 16.96 $ 16.00
Awards modification (1) (in Dollars)   (76,500) [1]  
Awards modification (1) (in Dollars)   15.69 [1]  
Stock Units 298,908 [2] 617,084 [2],[3] 853,480
Weighted Average Grant Date Fair Value Per Share (in Dollars per share) $ 24.25 [2] $ 18.69 [2],[3] $ 14.40
Stock Units (in Dollars)    [4] 0 [4]  
Weighted Average Grant Date Fair Value Per Share (in Dollars)    [4] 0 [4]  
Stock Unit (518,552) (447,096) (310,976)
Weighted Average Grant Date Fair Value Per Share (in Dollars per share) $ 17.57 $ 17.30 $ 17.78
Stock Unit (124,613) (77,356) (76,622)
Weighted Average Grant Date Fair Value Per Share (in Dollars per share) $ 17.06 $ 16.61 $ 18.39
PSUs [Member]
      
Note 6 - Stockholder's Equity (Details) - RSU Summary [Line Items]      
Outstanding at January 1, 2011 531,185 217,125 343,625
Outstanding at January 1, 2011 (in Dollars per share) $ 18.49 $ 20.73 $ 20.73
Stock Unit 1,027,782 531,185 217,125
Weighted Average Grant Date Fair Value Per Share (in Dollars per share) $ 23.02 $ 18.49 $ 20.73
Awards modification (1) (in Dollars)   76,500 [1]  
Awards modification (1) (in Dollars)   15.69 [1]  
Stock Units 874,806 [2] 962,796 [2],[3] 0
Weighted Average Grant Date Fair Value Per Share (in Dollars per share) $ 24.43 [2] $ 18.24 [2],[3] $ 0
Stock Units (in Dollars) (124,141) [4] (624,403) [4]  
Weighted Average Grant Date Fair Value Per Share (in Dollars) 21.98 [4] 18.19 [4]  
Stock Unit (206,409) (96,500) (102,125)
Weighted Average Grant Date Fair Value Per Share (in Dollars per share) $ 18.90 $ 20.73 $ 20.73
Stock Unit (47,659) (4,333) (24,375)
Weighted Average Grant Date Fair Value Per Share (in Dollars per share) $ 19.06 $ 19.07 $ 20.73
MSUs [Member]
      
Note 6 - Stockholder's Equity (Details) - RSU Summary [Line Items]      
Stock Unit 1,800,000    
Weighted Average Grant Date Fair Value Per Share (in Dollars per share) $ 23.57    
Awards modification (1) (in Dollars)   0 [1]  
Awards modification (1) (in Dollars)   0 [1]  
Stock Units 1,800,000 [2]    [2],[3]  
Weighted Average Grant Date Fair Value Per Share (in Dollars per share) $ 23.57 [2]    [2],[3]  
Stock Units (in Dollars)    [4]    [4]  
Weighted Average Grant Date Fair Value Per Share (in Dollars)    [4]    [4]  
[1] See "2011 and 2012 CEO Awards" below.
[2] The number of PSUs and MSUs granted reflects the maximum number of shares that can be earned under the programs.
[3] Includes a total of 73,805 shares granted as a result of the equity award modifications discussed above.
[4] The performance adjustment reflects the number of PSUs that will not ultimately be earned based on management's probability assessment (the sum of (3) and (4) reflect the number of PSUs that will ultimately be earned based on management's probability assessment).