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Note 3 - Property Acquisitions, Developments and Other Investments (Details) - Acquisition of Operating Properties ft² in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 USD ($) ft² | Dec. 31, 2014 USD ($) ft²
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash |  | $ 712,055 | [1] | $ 510,052 | [2]
Purchase price, debt assumed |  | 807,591 |  | 702,550 |
Purchase price, other | [3] | 252,467 |  | 229,635 |
Purchase price, total |  | $ 1,772,113 |  | $ 1,442,237 |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] | 7,519 |  | 7,104 |
Elmont Plaza [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1],[5] | $ 2,400 |  |  |
Purchase price, debt assumed | [5] | 0 |  |  |
Purchase price, other | [3],[5] | 3,358 |  |  |
Purchase price, total | [5] | $ 5,758 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4],[5] | 13 |  |  |
Garden State Pavillion [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1] | $ 16,300 |  |  |
Purchase price, debt assumed |  | 0 |  |  |
Purchase price, other | [3] | 0 |  |  |
Purchase price, total |  | $ 16,300 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] | 111 |  |  |
Kimstone [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1],[5] | $ 513,513 |  |  |
Purchase price, debt assumed | [5] | 637,976 |  |  |
Purchase price, other | [3],[5] | 236,011 |  |  |
Purchase price, total | [5] | $ 1,387,500 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4],[5] | 5,631 |  |  |
Copperfield Village [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1] | $ 18,700 |  |  |
Purchase price, debt assumed |  | 20,800 |  |  |
Purchase price, other | [3] | 0 |  |  |
Purchase price, total |  | $ 39,500 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] | 165 |  |  |
Snowden Square [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1] | $ 4,868 |  |  |
Purchase price, debt assumed |  | 0 |  |  |
Purchase price, other | [3] | 0 |  |  |
Purchase price, total |  | $ 4,868 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] | 25 |  |  |
Dulles Town Crossing [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1] | $ 4,830 |  |  |
Purchase price, debt assumed |  | 0 |  |  |
Purchase price, other | [3] | 0 |  |  |
Purchase price, total |  | $ 4,830 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] | 9 |  |  |
Flagler Park [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1] | $ 1,875 |  |  |
Purchase price, debt assumed |  | 0 |  |  |
Purchase price, other | [3] | 0 |  |  |
Purchase price, total |  | $ 1,875 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] | 5 |  |  |
West Farms [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1] | $ 6,200 |  |  |
Purchase price, debt assumed |  | 0 |  |  |
Purchase price, other | [3] | 0 |  |  |
Purchase price, total |  | $ 6,200 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] | 24 |  |  |
Milleridge Inn [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1] | $ 7,500 |  |  |
Purchase price, debt assumed |  | 0 |  |  |
Purchase price, other | [3] | 0 |  |  |
Purchase price, total |  | $ 7,500 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] | 0 |  |  |
Woodgrove Festival [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1] | $ 5,611 |  |  |
Purchase price, debt assumed |  | 0 |  |  |
Purchase price, other | [3] | 0 |  |  |
Purchase price, total |  | $ 5,611 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] | 12 |  |  |
Montgomery Plaza [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1],[5] | $ 34,522 |  |  |
Purchase price, debt assumed | [5] | 29,311 |  |  |
Purchase price, other | [3],[5] | 9,044 |  |  |
Purchase price, total | [5] | $ 72,877 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4],[5] | 291 |  |  |
Coulter Avenue 125 [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1] | $ 1,925 |  |  |
Purchase price, debt assumed |  | 0 |  |  |
Purchase price, other | [3] | 0 |  |  |
Purchase price, total |  | $ 1,925 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] | 6 |  |  |
Conroe Marketplace [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1],[5] | $ 18,546 |  |  |
Purchase price, debt assumed | [5] | 42,350 |  |  |
Purchase price, other | [3],[5] | 3,104 |  |  |
Purchase price, total | [5] | $ 64,000 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4],[5] | 289 |  |  |
Laurel Plaza [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1] | $ 1,200 |  |  |
Purchase price, debt assumed |  | 0 |  |  |
Purchase price, other | [3] | 0 |  |  |
Purchase price, total |  | $ 1,200 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] | 4 |  |  |
District Heights [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1],[5] | $ 13,140 |  |  |
Purchase price, debt assumed | [5] | 13,255 |  |  |
Purchase price, other | [3],[5] | 950 |  |  |
Purchase price, total | [5] | $ 27,345 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4],[5] | 91 |  |  |
Village on the Park [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1] | $ 824 |  |  |
Purchase price, debt assumed |  | 0 |  |  |
Purchase price, other | [3] | 0 |  |  |
Purchase price, total |  | $ 824 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] | 10 |  |  |
Christown Mall [Member[ |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1] | $ 51,351 |  |  |
Purchase price, debt assumed |  | 63,899 |  |  |
Purchase price, other | [3] | 0 |  |  |
Purchase price, total |  | $ 115,250 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] | 833 |  |  |
Washington St Plaza [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [1] | $ 8,750 |  |  |
Purchase price, debt assumed |  | 0 |  |  |
Purchase price, other | [3] | 0 |  |  |
Purchase price, total |  | $ 8,750 |  |  |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] | 0 |  |  |
North Valley [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [2] |  |  | $ 3,000 |
Purchase price, debt assumed |  |  |  | 0 |
Purchase price, other | [3] |  |  | 0 |
Purchase price, total |  |  |  | $ 3,000 |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] |  |  | 0 |
LaSalle Properties [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [2],[5] |  |  | $ 62,239 |
Purchase price, debt assumed | [5] |  |  | 23,269 |
Purchase price, other | [3],[5] |  |  | 7,642 |
Purchase price, total | [5] |  |  | $ 93,150 |
Purchase price, gross leasable area (in Square Feet) | ft² | [4],[5] |  |  | 316 |
Harrisburg Land Parcel [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [2] |  |  | $ 2,550 |
Purchase price, debt assumed |  |  |  | 0 |
Purchase price, other | [3] |  |  | 0 |
Purchase price, total |  |  |  | $ 2,550 |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] |  |  | 0 |
Crossroads Plaza [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [2] |  |  | $ 18,691 |
Purchase price, debt assumed |  |  |  | 72,309 |
Purchase price, other | [3] |  |  | 0 |
Purchase price, total |  |  |  | $ 91,000 |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] |  |  | 489 |
Quail Corners [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [2],[5] |  |  | $ 9,398 |
Purchase price, debt assumed | [5] |  |  | 17,409 |
Purchase price, other | [3],[5] |  |  | 4,943 |
Purchase price, total | [5] |  |  | $ 31,750 |
Purchase price, gross leasable area (in Square Feet) | ft² | [4],[5] |  |  | 110 |
KIF 1 Portfolio [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [2],[5] |  |  | $ 128,699 |
Purchase price, debt assumed | [5] |  |  | 157,010 |
Purchase price, other | [3],[5] |  |  | 122,291 |
Purchase price, total | [5] |  |  | $ 408,000 |
Purchase price, gross leasable area (in Square Feet) | ft² | [4],[5] |  |  | 1,589 |
Fountains at Arbor Lakes [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [2] |  |  | $ 900 |
Purchase price, debt assumed |  |  |  | 0 |
Purchase price, other | [3] |  |  | 0 |
Purchase price, total |  |  |  | $ 900 |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] |  |  | 0 |
Boston Portfolio [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [2] |  |  | $ 149,486 |
Purchase price, debt assumed |  |  |  | 120,514 |
Purchase price, other | [3] |  |  | 0 |
Purchase price, total |  |  |  | $ 270,000 |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] |  |  | 1,426 |
Vinnin Square [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [2] |  |  | $ 2,550 |
Purchase price, debt assumed |  |  |  | 0 |
Purchase price, other | [3] |  |  | 0 |
Purchase price, total |  |  |  | $ 2,550 |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] |  |  | 6 |
SEB Portfolio [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [2],[5] |  |  | $ 69,261 |
Purchase price, debt assumed | [5] |  |  | 193,600 |
Purchase price, other | [3],[5] |  |  | 12,911 |
Purchase price, total | [5] |  |  | $ 275,772 |
Purchase price, gross leasable area (in Square Feet) | ft² | [4],[5] |  |  | 1,415 |
Highlands Ranch Parcel [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [2] |  |  | $ 3,800 |
Purchase price, debt assumed |  |  |  | 0 |
Purchase price, other | [3] |  |  | 0 |
Purchase price, total |  |  |  | $ 3,800 |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] |  |  | 10 |
BIG Portfolios [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [2],[5] |  |  | $ 0 |
Purchase price, debt assumed | [5] |  |  | 118,439 |
Purchase price, other | [3],[5] |  |  | 76,511 |
Purchase price, total | [5] |  |  | $ 194,950 |
Purchase price, gross leasable area (in Square Feet) | ft² | [4],[5] |  |  | 1,148 |
Springfield S.C. [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [2] |  |  | $ 8,800 |
Purchase price, debt assumed |  |  |  | 0 |
Purchase price, other | [3] |  |  | 0 |
Purchase price, total |  |  |  | $ 8,800 |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] |  |  | 210 |
North Quincy Plaza [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [2],[5] |  |  | $ 20,470 |
Purchase price, debt assumed | [5] |  |  | 0 |
Purchase price, other | [3],[5] |  |  | 2,530 |
Purchase price, total | [5] |  |  | $ 23,000 |
Purchase price, gross leasable area (in Square Feet) | ft² | [4],[5] |  |  | 81 |
Belmart Plaza [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [2],[5] |  |  | $ 3,208 |
Purchase price, debt assumed | [5] |  |  | 0 |
Purchase price, other | [3],[5] |  |  | 2,807 |
Purchase price, total | [5] |  |  | $ 6,015 |
Purchase price, gross leasable area (in Square Feet) | ft² | [4],[5] |  |  | 77 |
Braelinn Village [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Purchase price, cash | [2] |  |  | $ 27,000 |
Purchase price, debt assumed |  |  |  | 0 |
Purchase price, other | [3] |  |  | 0 |
Purchase price, total |  |  |  | $ 27,000 |
Purchase price, gross leasable area (in Square Feet) | ft² | [4] |  |  | 227 |
[1] | The Company utilized $89.5 million associated with Internal Revenue Code 1031 sales proceeds.
[2] | Includes 1031 sales proceeds of $126.8 million
[3] | Includes the Company's previously held equity interest investment.
[4] | Gross leasable area ("GLA")
[5] | The Company acquired from its partners the remaining ownership interest in these properties that were held in joint ventures in which the Company had a noncontrolling interest. The Company evaluated these transactions pursuant to the FASB's Consolidation guidance and as a result, recognized a gain on change in control of interest, net resulting from the fair value adjustment associated with the Company's previously held equity interest, which is included in the purchase price above in Other. The Company's previous ownership interest and gain on change in control of interests, net recognized as a result of these transactions are as follows:

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