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Note 16 - Preferred Stock, Common Stock and Convertible Unit Transactions (Tables)
12 Months Ended
Dec. 31, 2013
Outstanding Preferred Stock [Member]
 
Note 16 - Preferred Stock, Common Stock and Convertible Unit Transactions (Tables) [Line Items]  
Schedule of Stockholders Equity [Table Text Block]

As of December 31, 2013 and 2012

 

Series of Preferred Stock

 

Shares Authorized

   

Shares Issued and Outstanding

    Liquidation Preference    

Dividend Rate

    Annual Dividend per Depositary Share    

Par Value

 

Series H

    70,000       70,000     $ 175,000       6.90%     $ 1.72500     $ 1.00  

Series I

    18,400       16,000       400,000       6.00%     $ 1.50000     $ 1.00  

Series J

    9,000       9,000       225,000       5.50%     $ 1.37500     $ 1.00  

Series K

    8,050       7,000       175,000       5.625%     $ 1.40625     $ 1.00  
      105,450       102,000     $ 975,000                          
Preferred Stock Issued [Member]
 
Note 16 - Preferred Stock, Common Stock and Convertible Unit Transactions (Tables) [Line Items]  
Schedule of Stockholders Equity [Table Text Block]

Series of Preferred Stock

 

Date Issued

 

Depositary Shares Issued

 

Fractional Interest per Share

 

Net Proceeds, After Expenses (in millions)

    Offering/ Redemption Price  

Optional Redemption Date

                                 

Series H(1)

 

8/30/2010

    7,000,000  

1/100

  $ 169.2     $ 25.00  

8/30/2015

Series I (2)

 

3/20/2012

    16,000,000  

1/1000

  $ 387.2     $ 25.00  

3/20/2017

Series J (3)

 

7/25/2012

    9,000,000  

1/1000

  $ 217.8     $ 25.00  

7/25/2017

Series K (4)

 

12/7/2012

    7,000,000  

1/1000

  $ 169.1     $ 25.00  

12/7/2017

Preferred Stock Redeemed [Member]
 
Note 16 - Preferred Stock, Common Stock and Convertible Unit Transactions (Tables) [Line Items]  
Schedule of Stockholders Equity [Table Text Block]

Series of Preferred Stock

 

Date Issued

 

Depositary Shares Issued

   

Redemption Amount

(in millions)

   

Offering/ Redemption Price

 

Optional Redemption Date

 

Actual Redemption Date

Series F (1)

 

6/5/2003

    7,000,000     $ 175.0     $     25.00  

6/5/2008

 

8/15/2012

Series G (2)

 

10/10/2007

    18,400,000     $ 460.0     $     25.00  

10/10/2012

 

10/10/2012