Note 7 - Investment and Advances in Real Estate Joint Ventures (Details) - Summarized Financial Information for KIR - Balance Sheets (KIR [Member], USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Schedule of Equity Method Investments [Line Items]
Assets	$ 1,104.8	$ 1,146.1
Members’ capital	218.6	235.2
	1,104.8	1,146.1
Real Estate, Net [Member]
Schedule of Equity Method Investments [Line Items]
Assets	1,024.3	1,064.2
Other Assets [Member]
Schedule of Equity Method Investments [Line Items]
Assets	80.5	81.9
Mortgage Payable [Member]
Schedule of Equity Method Investments [Line Items]
Liabilities	866.4	889.1
Other Liabilities [Member]
Schedule of Equity Method Investments [Line Items]
Liabilities	$ 19.8	$ 21.8