Note 14 - Mortgages Payable (Detail) (USD $)	1 Months Ended		12 Months Ended				12 Months Ended
	Aug. 31, 2010	Dec. 31, 2012	Dec. 31, 2012 Paid Off [Member] Mortgage Payable [Member]	Dec. 31, 2011 Paid Off [Member] Mortgage Payable [Member]	Dec. 31, 2012 Transfers [Member] Mortgage Payable [Member]	Dec. 31, 2010 Transfers [Member]	Dec. 31, 2012 Mortgage Payable [Member]	Dec. 31, 2011 Mortgage Payable [Member]
Business Acquisition, Purchase Price Allocation, Liabilities Assumed							$ 185,300,000	$ 124,800,000
Number of Real Estate Properties		28	19	10		7	7	12
Unamortized Fair Value Adjustments During Period							6,100,000
Repayments of Secured Debt (in Dollars)	150,000,000		284,800,000	62,500,000
Mortgage Loans on Real Estate, Number of Loans					5
Noncash or Part Noncash Divestiture, Amount of Consideration Received					17,100,000
Unamortized FairValue Debt Adjustments							10,300,000	6,900,000
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Minimum							0.17%
Debt Instrument, Interest Rate, Effective Percentage Rate Range, Maximum							9.75%
Debt, Weighted Average Interest Rate							6.18%
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months							104,300,000
Long-term Debt, Maturities, Repayments of Principal in Year Two							206,100,000
Long-term Debt, Maturities, Repayments of Principal in Year Three							131,300,000
Long-term Debt, Maturities, Repayments of Principal in Year Four							253,100,000
Long-term Debt, Maturities, Repayments of Principal in Year Five							178,000,000
Long-term Debt, Maturities, Repayments of Principal after Year Five							$ 120,100,000