Note 10 - Mortgages Payable (Details) (Mortgages [Member], USD $) In Millions, unless otherwise specified	6 Months Ended
Jun. 30, 2014
Note 10 - Mortgages Payable (Details) [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	$ 413.5
Unamortized Fair Value Adjustments During Period	23.0
Repayments of Secured Debt	$ 233.8
Acquisitions [Member]
Note 10 - Mortgages Payable (Details) [Line Items]
Number of Real Estate Properties	38
Repayment of Debt [Member]
Note 10 - Mortgages Payable (Details) [Line Items]
Number of Real Estate Properties	14

The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Name:	us-gaap_RepaymentsOfSecuredDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration