Note 15 - Noncontrolling Interests (Detail) - Convertible Non-convertible Units (USD $)	12 Months Ended
	Dec. 31, 2012
Preferred A Units [Member]
Number of Units Issued	81,800,000	[1]
Par Value Per Unit (in Dollars per share)	$ 1.00
Return Per Annum	7.00%
Class A Preferred Units [Member]
Number of Units Issued	2,000	[1]
Par Value Per Unit (in Dollars per share)	$ 10,000
Return Per Annum - Spread	2.00%
Class B-1 Preferred Units [Member]
Number of Units Issued	2,627	[2]
Par Value Per Unit (in Dollars per share)	$ 10,000
Return Per Annum	7.00%
Class B-2 Preferred Units [Member]
Number of Units Issued	5,673	[1]
Par Value Per Unit (in Dollars per share)	$ 10,000
Return Per Annum	7.00%
Class C DownReit Units [Member]
Number of Units Issued	640,001	[2]
Par Value Per Unit (in Dollars per share)	$ 30.52

[1] These units are redeemable for cash by the holder or callable by the Company.

[2] These units are redeemable for cash by the holder or at the Company's option, shares of the Company's common stock.