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Real Estate and Accumulated Depreciation (Detail) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 984,390 |  |  |
Cost capitalized subsequent to acquisition | 1,097,207 |  |  |
Land | 453,322 |  |  |
Buildings | 1,292,631 |  |  |
Construction in progress | 335,644 | $ 185,972 |  |
Total Purchase Price | 2,081,597 | 1,948,165 | $ 1,803,200 | $ 1,700,813
Accumulated Depreciation | 563,474 | 525,518 | $ 488,166 | $ 458,279
Book Value | 1,518,123 | 1,422,647 |  |
Related Debt | 821,503 | 880,271 |  |
Development land, related debt | 108,623 | $ 21,655 |  |
Total, related debt | 938,421 |  |  |
Shopping Centers |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | 841,335 |  |  |
Cost capitalized subsequent to acquisition | 449,152 |  |  |
Land | 415,424 |  |  |
Buildings | 840,044 |  |  |
Construction in progress | 35,019 |  |  |
Total Purchase Price | 1,290,487 |  |  |
Accumulated Depreciation | 381,382 |  |  |
Book Value | 909,105 |  |  |
Related Debt | 578,266 |  |  |
Shopping Centers | Ashbrook Marketplace, Ashburn, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | 8,938 |  |  |
Cost capitalized subsequent to acquisition | 16,261 |  |  |
Land | 3,066 |  |  |
Buildings | 3,005 |  |  |
Construction in progress | 19,128 |  |  |
Total Purchase Price | 25,199 |  |  |
Accumulated Depreciation | 8 |  |  |
Book Value | 25,191 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Ashburn Village, Ashburn, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 11,431 |  |  |
Cost capitalized subsequent to acquisition | 20,514 |  |  |
Land | 6,764 |  |  |
Buildings | 25,077 |  |  |
Construction in progress | 104 |  |  |
Total Purchase Price | 31,945 |  |  |
Accumulated Depreciation | 14,234 |  |  |
Book Value | 17,711 |  |  |
Related Debt | $ 26,245 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Ashland Square Phase I, Dumfries, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 1,178 |  |  |
Cost capitalized subsequent to acquisition | 7,508 |  |  |
Land | 1,178 |  |  |
Buildings | 5,298 |  |  |
Construction in progress | 2,210 |  |  |
Total Purchase Price | 8,686 |  |  |
Accumulated Depreciation | 2,215 |  |  |
Book Value | 6,471 |  |  |
Related Debt | $ 0 |  |  |
Shopping Centers | Ashland Square Phase I, Dumfries, VA | Minimum |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Buildings and Improvements Depreciable Lives in Years | 20 years |  |  |
Shopping Centers | Ashland Square Phase I, Dumfries, VA | Maximum |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Buildings and Improvements Depreciable Lives in Years | 50 years |  |  |
Shopping Centers | Beacon Center, Alexandria, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 24,161 |  |  |
Cost capitalized subsequent to acquisition | 18,477 |  |  |
Land | 22,674 |  |  |
Buildings | 19,946 |  |  |
Construction in progress | 18 |  |  |
Total Purchase Price | 42,638 |  |  |
Accumulated Depreciation | 15,335 |  |  |
Book Value | 27,303 |  |  |
Related Debt | $ 36,206 |  |  |
Shopping Centers | Beacon Center, Alexandria, VA | Minimum |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Beacon Center, Alexandria, VA | Maximum |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Buildings and Improvements Depreciable Lives in Years | 50 years |  |  |
Shopping Centers | BJ’s Wholesale Club, Alexandria, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 22,623 |  |  |
Cost capitalized subsequent to acquisition | 0 |  |  |
Land | 22,623 |  |  |
Buildings | 0 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 22,623 |  |  |
Accumulated Depreciation | 0 |  |  |
Book Value | 22,623 |  |  |
Related Debt | $ 10,323 |  |  |
Buildings and Improvements Depreciable Lives in Years | 0 years |  |  |
Shopping Centers | Boca Valley Plaza, Boca Raton, FL |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 16,720 |  |  |
Cost capitalized subsequent to acquisition | 2,064 |  |  |
Land | 5,735 |  |  |
Buildings | 13,049 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 18,784 |  |  |
Accumulated Depreciation | 5,252 |  |  |
Book Value | 13,532 |  |  |
Related Debt | $ 9,234 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Boulevard, Fairfax, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 4,883 |  |  |
Cost capitalized subsequent to acquisition | 4,709 |  |  |
Land | 3,687 |  |  |
Buildings | 5,905 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 9,592 |  |  |
Accumulated Depreciation | 3,243 |  |  |
Book Value | 6,349 |  |  |
Related Debt | $ 15,723 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Briggs Chaney MarketPlace, Silver Spring, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 27,037 |  |  |
Cost capitalized subsequent to acquisition | 4,703 |  |  |
Land | 9,789 |  |  |
Buildings | 21,951 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 31,740 |  |  |
Accumulated Depreciation | 9,333 |  |  |
Book Value | 22,407 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Broadlands Village, Ashburn, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 5,316 |  |  |
Cost capitalized subsequent to acquisition | 34,586 |  |  |
Land | 5,300 |  |  |
Buildings | 34,589 |  |  |
Construction in progress | 13 |  |  |
Total Purchase Price | 39,902 |  |  |
Accumulated Depreciation | 12,872 |  |  |
Book Value | 27,030 |  |  |
Related Debt | $ 31,221 |  |  |
Shopping Centers | Broadlands Village, Ashburn, VA | Minimum |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Broadlands Village, Ashburn, VA | Maximum |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Buildings and Improvements Depreciable Lives in Years | 50 years |  |  |
Shopping Centers | Burtonsville Town Square, Burtonsville, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 74,212 |  |  |
Cost capitalized subsequent to acquisition | 5,612 |  |  |
Land | 28,401 |  |  |
Buildings | 50,915 |  |  |
Construction in progress | 508 |  |  |
Total Purchase Price | 79,824 |  |  |
Accumulated Depreciation | 3,728 |  |  |
Book Value | 76,096 |  |  |
Related Debt | $ 36,975 |  |  |
Shopping Centers | Burtonsville Town Square, Burtonsville, MD | Minimum |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Buildings and Improvements Depreciable Lives in Years | 20 years |  |  |
Shopping Centers | Burtonsville Town Square, Burtonsville, MD | Maximum |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Buildings and Improvements Depreciable Lives in Years | 45 years |  |  |
Shopping Centers | Countryside Marketplace, Sterling, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 28,912 |  |  |
Cost capitalized subsequent to acquisition | 4,143 |  |  |
Land | 7,666 |  |  |
Buildings | 25,389 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 33,055 |  |  |
Accumulated Depreciation | 10,518 |  |  |
Book Value | 22,537 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Cranberry Square, Westminster, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 31,578 |  |  |
Cost capitalized subsequent to acquisition | 739 |  |  |
Land | 6,700 |  |  |
Buildings | 25,617 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 32,317 |  |  |
Accumulated Depreciation | 5,497 |  |  |
Book Value | 26,820 |  |  |
Related Debt | $ 15,917 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Cruse MarketPlace, Cumming, GA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 12,226 |  |  |
Cost capitalized subsequent to acquisition | 689 |  |  |
Land | 3,901 |  |  |
Buildings | 9,014 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 12,915 |  |  |
Accumulated Depreciation | 3,626 |  |  |
Book Value | 9,289 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Flagship Center, Rockville, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 160 |  |  |
Cost capitalized subsequent to acquisition | 9 |  |  |
Land | 169 |  |  |
Buildings | 0 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 169 |  |  |
Accumulated Depreciation | 0 |  |  |
Book Value | 169 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 0 years |  |  |
Shopping Centers | French Market, Oklahoma City, OK |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 5,781 |  |  |
Cost capitalized subsequent to acquisition | 14,269 |  |  |
Land | 1,118 |  |  |
Buildings | 18,929 |  |  |
Construction in progress | 3 |  |  |
Total Purchase Price | 20,050 |  |  |
Accumulated Depreciation | 12,490 |  |  |
Book Value | 7,560 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 50 years |  |  |
Shopping Centers | Germantown, Germantown, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 2,034 |  |  |
Cost capitalized subsequent to acquisition | 567 |  |  |
Land | 2,034 |  |  |
Buildings | 567 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 2,601 |  |  |
Accumulated Depreciation | 409 |  |  |
Book Value | 2,192 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | The Glen, Woodbridge, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 12,918 |  |  |
Cost capitalized subsequent to acquisition | 8,351 |  |  |
Land | 5,300 |  |  |
Buildings | 15,942 |  |  |
Construction in progress | 27 |  |  |
Total Purchase Price | 21,269 |  |  |
Accumulated Depreciation | 10,138 |  |  |
Book Value | 11,131 |  |  |
Related Debt | $ 22,448 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Great Falls Center, Great Falls, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 41,750 |  |  |
Cost capitalized subsequent to acquisition | 3,203 |  |  |
Land | 14,766 |  |  |
Buildings | 30,187 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 44,953 |  |  |
Accumulated Depreciation | 9,497 |  |  |
Book Value | 35,456 |  |  |
Related Debt | $ 10,774 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Hampshire Langley, Takoma, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 3,159 |  |  |
Cost capitalized subsequent to acquisition | 3,549 |  |  |
Land | 1,856 |  |  |
Buildings | 4,635 |  |  |
Construction in progress | 217 |  |  |
Total Purchase Price | 6,708 |  |  |
Accumulated Depreciation | 3,908 |  |  |
Book Value | 2,800 |  |  |
Related Debt | $ 14,810 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Hunt Club Corners, Apopka, FL |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 12,584 |  |  |
Cost capitalized subsequent to acquisition | 4,409 |  |  |
Land | 4,822 |  |  |
Buildings | 12,171 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 16,993 |  |  |
Accumulated Depreciation | 4,788 |  |  |
Book Value | 12,205 |  |  |
Related Debt | $ 5,300 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Jamestown Place, Altamonte Springs, FL |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 14,055 |  |  |
Cost capitalized subsequent to acquisition | 1,950 |  |  |
Land | 4,455 |  |  |
Buildings | 11,550 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 16,005 |  |  |
Accumulated Depreciation | 4,291 |  |  |
Book Value | 11,714 |  |  |
Related Debt | $ 6,539 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Kentlands Square I, Gaithersburg, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 14,379 |  |  |
Cost capitalized subsequent to acquisition | 840 |  |  |
Land | 5,006 |  |  |
Buildings | 9,711 |  |  |
Construction in progress | 502 |  |  |
Total Purchase Price | 15,219 |  |  |
Accumulated Depreciation | 4,220 |  |  |
Book Value | 10,999 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Kentlands Square II, Gaithersburg, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 76,723 |  |  |
Cost capitalized subsequent to acquisition | 2,733 |  |  |
Land | 22,800 |  |  |
Buildings | 56,270 |  |  |
Construction in progress | 386 |  |  |
Total Purchase Price | 79,456 |  |  |
Accumulated Depreciation | 12,147 |  |  |
Book Value | 67,309 |  |  |
Related Debt | $ 33,952 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Kentlands Place, Gaithersburg, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 1,425 |  |  |
Cost capitalized subsequent to acquisition | 7,373 |  |  |
Land | 1,425 |  |  |
Buildings | 7,373 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 8,798 |  |  |
Accumulated Depreciation | 4,241 |  |  |
Book Value | 4,557 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 50 years |  |  |
Shopping Centers | Lansdowne Town Center, Leesburg, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 6,545 |  |  |
Cost capitalized subsequent to acquisition | 43,003 |  |  |
Land | 6,546 |  |  |
Buildings | 37,843 |  |  |
Construction in progress | 5,159 |  |  |
Total Purchase Price | 49,548 |  |  |
Accumulated Depreciation | 16,291 |  |  |
Book Value | 33,257 |  |  |
Related Debt | $ 30,719 |  |  |
Buildings and Improvements Depreciable Lives in Years | 50 years |  |  |
Shopping Centers | Leesburg Pike Plaza, Baileys Crossroads, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 2,418 |  |  |
Cost capitalized subsequent to acquisition | 6,292 |  |  |
Land | 1,132 |  |  |
Buildings | 7,578 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 8,710 |  |  |
Accumulated Depreciation | 6,159 |  |  |
Book Value | 2,551 |  |  |
Related Debt | $ 14,414 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Lumberton Plaza, Lumberton, NJ |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 4,400 |  |  |
Cost capitalized subsequent to acquisition | 11,612 |  |  |
Land | 950 |  |  |
Buildings | 15,041 |  |  |
Construction in progress | 21 |  |  |
Total Purchase Price | 16,012 |  |  |
Accumulated Depreciation | 13,379 |  |  |
Book Value | 2,633 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Metro Pike Center, Rockville, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 33,123 |  |  |
Cost capitalized subsequent to acquisition | 4,605 |  |  |
Land | 26,064 |  |  |
Buildings | 7,729 |  |  |
Construction in progress | 3,935 |  |  |
Total Purchase Price | 37,728 |  |  |
Accumulated Depreciation | 1,822 |  |  |
Book Value | 35,906 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Shops at Monocacy, Frederick, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 9,541 |  |  |
Cost capitalized subsequent to acquisition | 13,994 |  |  |
Land | 9,260 |  |  |
Buildings | 14,275 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 23,535 |  |  |
Accumulated Depreciation | 6,338 |  |  |
Book Value | 17,197 |  |  |
Related Debt | $ 28,500 |  |  |
Buildings and Improvements Depreciable Lives in Years | 50 years |  |  |
Shopping Centers | Northrock, Warrenton, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 12,686 |  |  |
Cost capitalized subsequent to acquisition | 15,429 |  |  |
Land | 12,686 |  |  |
Buildings | 15,423 |  |  |
Construction in progress | 6 |  |  |
Total Purchase Price | 28,115 |  |  |
Accumulated Depreciation | 4,907 |  |  |
Book Value | 23,208 |  |  |
Related Debt | $ 14,085 |  |  |
Buildings and Improvements Depreciable Lives in Years | 50 years |  |  |
Shopping Centers | Olde Forte Village, Ft. Washington, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 15,933 |  |  |
Cost capitalized subsequent to acquisition | 6,721 |  |  |
Land | 5,409 |  |  |
Buildings | 17,245 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 22,654 |  |  |
Accumulated Depreciation | 8,180 |  |  |
Book Value | 14,474 |  |  |
Related Debt | $ 21,702 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Olney, Olney, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 4,963 |  |  |
Cost capitalized subsequent to acquisition | 2,550 |  |  |
Land | 3,079 |  |  |
Buildings | 4,434 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 7,513 |  |  |
Accumulated Depreciation | 3,358 |  |  |
Book Value | 4,155 |  |  |
Related Debt | $ 11,952 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Orchard Park, Dunwoody, GA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 19,377 |  |  |
Cost capitalized subsequent to acquisition | 1,461 |  |  |
Land | 7,751 |  |  |
Buildings | 13,087 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 20,838 |  |  |
Accumulated Depreciation | 4,053 |  |  |
Book Value | 16,785 |  |  |
Related Debt | $ 9,441 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Palm Springs Center, Altamonte Springs, FL |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 18,365 |  |  |
Cost capitalized subsequent to acquisition | 2,007 |  |  |
Land | 5,739 |  |  |
Buildings | 14,633 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 20,372 |  |  |
Accumulated Depreciation | 5,593 |  |  |
Book Value | 14,779 |  |  |
Related Debt | $ 7,262 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Ravenwood, Baltimore, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 1,245 |  |  |
Cost capitalized subsequent to acquisition | 4,256 |  |  |
Land | 703 |  |  |
Buildings | 4,798 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 5,501 |  |  |
Accumulated Depreciation | 3,308 |  |  |
Book Value | 2,193 |  |  |
Related Debt | $ 13,606 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | 11503 Rockville Pike/5541 Nicholson Lane, Rockville, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 26,561 |  |  |
Cost capitalized subsequent to acquisition | 24 |  |  |
Land | 22,113 |  |  |
Buildings | 4,472 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 26,585 |  |  |
Accumulated Depreciation | 1,032 |  |  |
Book Value | 25,553 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | 1500/1580/1582/1584 Rockville Pike, Rockville, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 51,149 |  |  |
Cost capitalized subsequent to acquisition | 2,714 |  |  |
Land | 43,863 |  |  |
Buildings | 7,490 |  |  |
Construction in progress | 2,510 |  |  |
Total Purchase Price | 53,863 |  |  |
Accumulated Depreciation | 6,439 |  |  |
Book Value | 47,424 |  |  |
Related Debt | 0 |  |  |
Shopping Centers | Seabreeze Plaza, Palm Harbor, FL |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | 24,526 |  |  |
Cost capitalized subsequent to acquisition | 2,502 |  |  |
Land | 8,665 |  |  |
Buildings | 18,363 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 27,028 |  |  |
Accumulated Depreciation | 6,746 |  |  |
Book Value | 20,282 |  |  |
Related Debt | $ 15,019 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Market Place at Sea Colony, Bethany Beach, DE |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 2,920 |  |  |
Cost capitalized subsequent to acquisition | 246 |  |  |
Land | 1,147 |  |  |
Buildings | 2,019 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 3,166 |  |  |
Accumulated Depreciation | 615 |  |  |
Book Value | 2,551 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Seven Corners, Falls Church, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 4,848 |  |  |
Cost capitalized subsequent to acquisition | 44,612 |  |  |
Land | 4,913 |  |  |
Buildings | 44,522 |  |  |
Construction in progress | 25 |  |  |
Total Purchase Price | 49,460 |  |  |
Accumulated Depreciation | 30,937 |  |  |
Book Value | 18,523 |  |  |
Related Debt | $ 60,677 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Severna Park Marketplace, Severna Park, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 63,254 |  |  |
Cost capitalized subsequent to acquisition | 526 |  |  |
Land | 12,700 |  |  |
Buildings | 51,080 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 63,780 |  |  |
Accumulated Depreciation | 10,544 |  |  |
Book Value | 53,236 |  |  |
Related Debt | $ 29,710 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Shops at Fairfax, Fairfax, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 2,708 |  |  |
Cost capitalized subsequent to acquisition | 9,971 |  |  |
Land | 992 |  |  |
Buildings | 11,687 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 12,679 |  |  |
Accumulated Depreciation | 8,676 |  |  |
Book Value | 4,003 |  |  |
Related Debt | $ 10,482 |  |  |
Buildings and Improvements Depreciable Lives in Years | 50 years |  |  |
Shopping Centers | Smallwood Village Center, Waldorf, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 17,819 |  |  |
Cost capitalized subsequent to acquisition | 8,332 |  |  |
Land | 6,402 |  |  |
Buildings | 19,743 |  |  |
Construction in progress | 6 |  |  |
Total Purchase Price | 26,151 |  |  |
Accumulated Depreciation | 8,903 |  |  |
Book Value | 17,248 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Southdale, Glen Burnie, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 18,895 |  |  |
Cost capitalized subsequent to acquisition | 25,100 |  |  |
Land | 15,254 |  |  |
Buildings | 28,740 |  |  |
Construction in progress | 1 |  |  |
Total Purchase Price | 43,995 |  |  |
Accumulated Depreciation | 22,440 |  |  |
Book Value | 21,555 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Southside Plaza, Richmond, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 6,728 |  |  |
Cost capitalized subsequent to acquisition | 11,338 |  |  |
Land | 1,878 |  |  |
Buildings | 16,188 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 18,066 |  |  |
Accumulated Depreciation | 12,798 |  |  |
Book Value | 5,268 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | South Dekalb Plaza, Atlanta, GA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 2,474 |  |  |
Cost capitalized subsequent to acquisition | 4,449 |  |  |
Land | 703 |  |  |
Buildings | 6,220 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 6,923 |  |  |
Accumulated Depreciation | 5,088 |  |  |
Book Value | 1,835 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Thruway, Winston-Salem, NC |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 7,848 |  |  |
Cost capitalized subsequent to acquisition | 26,336 |  |  |
Land | 7,693 |  |  |
Buildings | 26,447 |  |  |
Construction in progress | 44 |  |  |
Total Purchase Price | 34,184 |  |  |
Accumulated Depreciation | 18,682 |  |  |
Book Value | 15,502 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Village Center, Centreville, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 16,502 |  |  |
Cost capitalized subsequent to acquisition | 2,636 |  |  |
Land | 7,851 |  |  |
Buildings | 11,287 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 19,138 |  |  |
Accumulated Depreciation | 7,380 |  |  |
Book Value | 11,758 |  |  |
Related Debt | $ 12,555 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Westview Village, Frederick, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 6,047 |  |  |
Cost capitalized subsequent to acquisition | 25,225 |  |  |
Land | 6,047 |  |  |
Buildings | 25,216 |  |  |
Construction in progress | 9 |  |  |
Total Purchase Price | 31,272 |  |  |
Accumulated Depreciation | 9,483 |  |  |
Book Value | 21,789 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 50 years |  |  |
Shopping Centers | White Oak, Silver Spring, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 6,277 |  |  |
Cost capitalized subsequent to acquisition | 5,771 |  |  |
Land | 4,649 |  |  |
Buildings | 7,212 |  |  |
Construction in progress | 187 |  |  |
Total Purchase Price | 12,048 |  |  |
Accumulated Depreciation | 6,169 |  |  |
Book Value | 5,879 |  |  |
Related Debt | $ 22,475 |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Shopping Centers | Other Buildings / Improvements |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Cost capitalized subsequent to acquisition | $ 182 |  |  |
Buildings | 182 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 182 |  |  |
Accumulated Depreciation | 72 |  |  |
Book Value | 110 |  |  |
Related Debt | 0 |  |  |
Mixed-Use Properties |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | 43,967 |  |  |
Cost capitalized subsequent to acquisition | 437,116 |  |  |
Land | 28,496 |  |  |
Buildings | 452,587 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 481,083 |  |  |
Accumulated Depreciation | 182,092 |  |  |
Book Value | 298,991 |  |  |
Related Debt | $ 249,956 |  |  |
Mixed-Use Properties | 1500/1580/1582/1584 Rockville Pike, Rockville, MD | Acquisition Date One |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Buildings and Improvements Depreciable Lives in Years | 5 years |  |  |
Mixed-Use Properties | 1500/1580/1582/1584 Rockville Pike, Rockville, MD | Acquisition Date Two |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Buildings and Improvements Depreciable Lives in Years | 10 years |  |  |
Mixed-Use Properties | 1500/1580/1582/1584 Rockville Pike, Rockville, MD | Acquisition Date Three |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Buildings and Improvements Depreciable Lives in Years | 5 years |  |  |
Mixed-Use Properties | 1500/1580/1582/1584 Rockville Pike, Rockville, MD | Acquisition Date Four |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Buildings and Improvements Depreciable Lives in Years | 4 years |  |  |
Mixed-Use Properties | Avenel Business Park, Gaithersburg, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 21,459 |  |  |
Cost capitalized subsequent to acquisition | 32,976 |  |  |
Land | 3,756 |  |  |
Buildings | 50,679 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 54,435 |  |  |
Accumulated Depreciation | 39,261 |  |  |
Book Value | 15,174 |  |  |
Related Debt | $ 26,260 |  |  |
Mixed-Use Properties | Avenel Business Park, Gaithersburg, MD | Minimum |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Buildings and Improvements Depreciable Lives in Years | 35 years |  |  |
Mixed-Use Properties | Avenel Business Park, Gaithersburg, MD | Maximum |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Buildings and Improvements Depreciable Lives in Years | 40 years |  |  |
Mixed-Use Properties | Clarendon Center, Arlington, VA (1) |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 12,753 |  |  |
Cost capitalized subsequent to acquisition | 186,210 |  |  |
Land | 16,287 |  |  |
Buildings | 182,676 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 198,963 |  |  |
Accumulated Depreciation | 46,856 |  |  |
Book Value | 152,107 |  |  |
Related Debt | $ 98,611 |  |  |
Buildings and Improvements Depreciable Lives in Years | 50 years |  |  |
Mixed-Use Properties | Park Van Ness, Washington, DC |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 2,242 |  |  |
Cost capitalized subsequent to acquisition | 91,699 |  |  |
Land | 2,242 |  |  |
Buildings | 91,699 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 93,941 |  |  |
Accumulated Depreciation | 10,757 |  |  |
Book Value | 83,184 |  |  |
Development land, related debt | $ 68,095 |  |  |
Buildings and Improvements Depreciable Lives in Years | 50 years |  |  |
Mixed-Use Properties | 601 Pennsylvania Ave., Washington, DC |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 5,479 |  |  |
Cost capitalized subsequent to acquisition | 69,129 |  |  |
Land | 5,667 |  |  |
Buildings | 68,941 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 74,608 |  |  |
Accumulated Depreciation | 57,038 |  |  |
Book Value | 17,570 |  |  |
Related Debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years | 35 years |  |  |
Mixed-Use Properties | Washington Square, Alexandria, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 2,034 |  |  |
Cost capitalized subsequent to acquisition | 57,102 |  |  |
Land | 544 |  |  |
Buildings | 58,592 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 59,136 |  |  |
Accumulated Depreciation | 28,180 |  |  |
Book Value | 30,956 |  |  |
Related Debt | $ 56,990 |  |  |
Buildings and Improvements Depreciable Lives in Years | 50 years |  |  |
Development Land |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | $ 99,088 |  |  |
Cost capitalized subsequent to acquisition | 210,939 |  |  |
Land | 9,402 |  |  |
Buildings | 0 |  |  |
Construction in progress | 300,625 |  |  |
Total Purchase Price | 310,027 |  |  |
Accumulated Depreciation | 0 |  |  |
Book Value | 310,027 |  |  |
Development land, related debt | 110,199 |  |  |
Development Land | Ashland Square Phase II, Manassas, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | 5,292 |  |  |
Cost capitalized subsequent to acquisition | 2,280 |  |  |
Land | 7,028 |  |  |
Buildings | 0 |  |  |
Construction in progress | 544 |  |  |
Total Purchase Price | 7,572 |  |  |
Accumulated Depreciation | 0 |  |  |
Book Value | 7,572 |  |  |
Development land, related debt | 0 |  |  |
Development Land | New Market, New Market, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | 2,088 |  |  |
Cost capitalized subsequent to acquisition | 286 |  |  |
Land | 2,374 |  |  |
Buildings | 0 |  |  |
Construction in progress | 0 |  |  |
Total Purchase Price | 2,374 |  |  |
Accumulated Depreciation | 0 |  |  |
Book Value | 2,374 |  |  |
Development land, related debt | 0 |  |  |
Development Land | The Waycroft, Arlington, VA |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | 52,067 |  |  |
Cost capitalized subsequent to acquisition | 203,376 |  |  |
Land | 0 |  |  |
Buildings | 0 |  |  |
Construction in progress | 255,443 |  |  |
Total Purchase Price | 255,443 |  |  |
Accumulated Depreciation | 0 |  |  |
Book Value | 255,443 |  |  |
Development land, related debt | 110,199 |  |  |
Development Land | 7316 Wisconsin Avenue, Bethesda, MD |  |  |  |
Real Estate Properties [Line Items] |  |  |  |
Initial Basis | 39,641 |  |  |
Cost capitalized subsequent to acquisition | 4,997 |  |  |
Land | 0 |  |  |
Buildings | 0 |  |  |
Construction in progress | 44,638 |  |  |
Total Purchase Price | 44,638 |  |  |
Accumulated Depreciation | 0 |  |  |
Book Value | 44,638 |  |  |
Development land, related debt | $ 0 |  |  |
Buildings and Improvements Depreciable Lives in Years |  |  |  |

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- Definition Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=118951113&loc=d3e6812-107765 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition This element represents the carrying value of a short-term real estate loan to finance building costs. The funds are disbursed as needed or in accordance with a prearranged plan; generally, a portion of the funds is disbursed at inception and the remainder as construction progresses. The money is repaid on completion of the project, usually from the proceeds of a mortgage loan. The rate is normally higher than the prime rate, and there is usually an origination fee. The effective yield on these loans tends to be high, and the lender has a security interest in the real property. Note that there are separate concepts for the current and noncurrent portions of long-term construction loans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount before accumulated deprecation and depletion of real estate held for productive use and additions or improvements to real estate held for productive use, examples include, but are not limited to, walkways, driveways, fences, and parking lots. Excludes land held for sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118951113&loc=d3e6812-107765 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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