Note 4 - Real Estate Under Development - Costs Incurred for Real Estate Development (Details) - USD ($) $ in Thousands		Dec. 31, 2016	Dec. 31, 2015
Property Under Development		$ 335,028	$ 179,190
Grand Parkway Marketplace [Member]
Property Under Development		94,841	42,032
Dania Pointe [Member]
Property Under Development	[1]	107,113
Promenade at Christiana [Member]
Property Under Development		25,521	16,063
Owings Mills [Member]
Property Under Development		25,119	8,640
Avenues Walk [Member]
Property Under Development		73,048	77,544
Staten Island Plaza [Member]
Property Under Development	[2]	9,386
Shoppes at Wynnewood [Member]
Property Under Development	[3]		$ 34,911

[1] During the year ended December 31, 2016, the Company acquired from its partner the remaining ownership interest in a property that was held in a joint venture in which the Company has a 55.0% noncontrolling interest for a gross purchase price of $84.2 million. The Company evaluated this transaction pursuant to the FASB's Consolidation guidance and as a result, no gain on change in control of interest was recognized as there was no fair value adjustment associated with the Company's previously held equity interest. Based upon the Company's intent to develop the property, the Company allocated the gross purchase price to Real estate under development on the Company's Consolidated Balance Sheets.

[2] Land held for future development

[3] During the year ended December 31, 2016, a development project, aggregating $38.0 million, was completed and reclassified into Land and Building and improvements on the Company's Consolidated Balance Sheets.