Note 8 - Fair Value of Financial Instruments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 30, 2013
Note 8 - Fair Value of Financial Instruments (Details) [Line Items]
Mortgage Loans on Real Estate, Minimum Interest Rate in Range	2.90%
Mortgage Loans on Real Estate, Maximum Interest Rate in Range	4.10%
Mortgage Loans on Real Estate, Interest Rate	3.30%
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net (in Dollars)	$ 4.6
Mortgages [Member] | Fair Value, Inputs, Level 3 [Member]
Note 8 - Fair Value of Financial Instruments (Details) [Line Items]
Notes Payable, Fair Value Disclosure (in Dollars)	$ 82.2