Note 17 - Preferred Stock, Common Stock and Convertible Unit Transactions (Detail) (USD $)	1 Months Ended			12 Months Ended
	Oct. 31, 2012	Aug. 31, 2012	Aug. 31, 2010	Dec. 31, 2012	Dec. 31, 2011
Repayments of Secured Debt (in Dollars)			$ 150,000,000
Preferred Stock Redemption Premium (in Dollars)	15,500,000	6,200,000		21,703,000
Stock Repurchased During Period, Shares (in Shares)				1,635,823	333,998
Stock Repurchased During Period, Value (in Dollars)				30,947,000	6,003,000
Proceeds from Stock Options Exercised (in Dollars)				22,600,000	4,900,000
Stockholders' Equity Attributable to Noncontrolling Interest (in Dollars)				167,320,000	193,757,000
Convertible Preferred Stock, Shares Issued upon Conversion (in Shares)				1,500,000
Series H Preferred Stock [Member]
Number of Votes				100
Number of Proxies				100
Number of Votes, Depositary				1
Preferred Stock, Liquidation Preference Per Share (in Dollars per share)				$ 2,500.00
Series I, J or K Preferred Stock [Member]
Number of Votes				1,000
Number of Proxies				1,000
Number of Votes, Depositary				1
Series I Preferred Stock [Member]
Preferred Stock, Liquidation Preference Per Share (in Dollars per share)				$ 25,000.00
Series J Preferred Stock [Member]
Preferred Stock, Liquidation Preference Per Share (in Dollars per share)				$ 25,000.00
Series K Preferred Stock [Member]
Preferred Stock, Liquidation Preference Per Share (in Dollars per share)				$ 25,000.00
Depositary Share [Member]
Preferred Stock, Liquidation Preference Per Share (in Dollars per share)				$ 25.00
Convertible Units [Member]
Stockholders' Equity Attributable to Noncontrolling Interest (in Dollars)				$ 28,700,000