Note 16 - Preferred Stock, Common Stock and Convertible Unit Transactions (Details) - Outstanding Preferred Stock (USD $) In Thousands, except Share data, unless otherwise specified			24 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Series H Preferred Stock [Member]	Dec. 31, 2013 Series I Preferred Stock [Member]	Dec. 31, 2013 Series J Preferred Stock [Member]	Dec. 31, 2013 Series K Preferred Stock [Member]	Dec. 31, 2013 Total [Member]
Note 16 - Preferred Stock, Common Stock and Convertible Unit Transactions (Details) - Outstanding Preferred Stock [Line Items]
Shares Authorized	5,961,200	5,961,200	70,000	18,400	9,000	8,050	105,450
Shares Outstanding			70,000	16,000	9,000	7,000	102,000
Liquidation Preference (in Dollars)	$ 975,000	$ 975,000	$ 175,000	$ 400,000	$ 225,000	$ 175,000	$ 975,000
Dividend Rate			6.90%	6.00%	5.50%	5.625%
Dividend Payout (in Dollars per share)			$ 1.72500	$ 1.50000	$ 1.37500	$ 1.40625
Par Value (in Dollars per share)	$ 1.00	$ 1.00	$ 1.00	$ 1.00	$ 1.00	$ 1.00