Loans Payable - Summary of Loans Payable (Detail) - USD ($) | 3 Months Ended | | |
Mar. 31, 2016 | Dec. 31, 2015 | May. 29, 2015 |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 184,970,426 | $ 184,629,082 | |
Secured debt, gross of unamortized debt issuance cost | 189,573,723 | 189,340,456 | |
Deferred Finance Costs, Net | (4,603,297) | (4,711,374) | |
Line of Credit [Member] | Monarch Bank Line Of Credit [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 3,000,000 | 0 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 4.25% | | |
Mortgage Loans Payable, Maturity Period | 2016-09 | | |
Line of Credit [Member] | KeyBank [Member] | | | |
Debt Instrument [Line Items] | | | |
Interest rate margin above LIBOR, minimum | | | 1.75% |
Interest rate margin above LIBOR, maximum | | | 2.50% |
Mortgages and other indebtedness | $ 6,873,750 | | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 2.94% | | |
Mortgage Loans Payable, Maturity Period | 2018-05 | | |
Line of Credit Facility, Remaining Borrowing Capacity | $ 37,530,000 | | |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.30% | | |
Senior Convertible Notes [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 3,000,000 | 3,000,000 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 9.00% | | |
Mortgage Loans Payable, Maturity Period | 2018-12 | | |
Senior Non-Convertible Notes [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 0 | 2,160,000 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 9.00% | | |
Mortgage Loans Payable, Maturity Period | 2016-01 | | |
Debt Instrument, Face Amount | $ 2,160,000 | | |
Shoppes at Eagle Harbor [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | 3,599,870 | 3,634,085 | |
Mortgage Loans Payable, Monthly Payment | $ 25,100 | | |
Mortgage Loans Payable, Interest Rate | 4.34% | | |
Mortgage Loans Payable, Maturity Period | 2018-03 | | |
Monarch Bank Building [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 1,362,425 | 1,376,452 | |
Mortgage Loans Payable, Monthly Payment | $ 9,473 | | |
Mortgage Loans Payable, Interest Rate | 4.15% | | |
Mortgage Loans Payable, Maturity Period | 2017-12 | | |
Perimeter Square [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 4,133,592 | 4,166,406 | |
Mortgage Loans Payable, Monthly Payment | $ 28,089 | | |
Mortgage Loans Payable, Interest Rate | 6.38% | | |
Mortgage Loans Payable, Maturity Period | 2016-06 | | |
Riversedge North [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 950,414 | 962,281 | |
Mortgage Loans Payable, Monthly Payment | $ 8,802 | | |
Mortgage Loans Payable, Interest Rate | 6.00% | | |
Mortgage Loans Payable, Maturity Period | 2019-01 | | |
Walnut Hill Plaza [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 3,511,836 | 3,535,606 | |
Mortgage Loans Payable, Monthly Payment | $ 24,273 | | |
Mortgage Loans Payable, Interest Rate | 5.50% | | |
Mortgage Loans Payable, Maturity Period | 2017-07 | | |
Twin City Commons [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 3,211,553 | 3,225,473 | |
Mortgage Loans Payable, Monthly Payment | $ 17,827 | | |
Mortgage Loans Payable, Interest Rate | 4.86% | | |
Mortgage Loans Payable, Maturity Period | 2023-01 | | |
Shoppes at TJ Maxx [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 6,038,482 | 6,081,272 | |
Mortgage Loans Payable, Monthly Payment | $ 33,880 | | |
Mortgage Loans Payable, Interest Rate | 3.88% | | |
Mortgage Loans Payable, Maturity Period | 2020-05 | | |
Forrest Gallery [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 8,895,572 | 8,926,712 | |
Mortgage Loans Payable, Monthly Payment | $ 50,973 | | |
Mortgage Loans Payable, Interest Rate | 5.40% | | |
Mortgage Loans Payable, Maturity Period | 2023-09 | | |
Tampa Festival [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 8,596,023 | 8,627,294 | |
Mortgage Loans Payable, Monthly Payment | $ 50,797 | | |
Mortgage Loans Payable, Interest Rate | 5.56% | | |
Mortgage Loans Payable, Maturity Period | 2023-09 | | |
Winslow Plaza [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 4,620,000 | 4,620,000 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 4.82% | | |
Mortgage Loans Payable, Maturity Period | 2025-12 | | |
Cypress Shopping Center [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 6,625,000 | 6,625,000 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 4.70% | | |
Mortgage Loans Payable, Maturity Period | 2024-07 | | |
Harrodsburg Marketplace [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 3,662,408 | 3,677,501 | |
Mortgage Loans Payable, Monthly Payment | $ 19,112 | | |
Mortgage Loans Payable, Interest Rate | 4.55% | | |
Mortgage Loans Payable, Maturity Period | 2024-09 | | |
Port Crossing Shopping Center [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 6,446,357 | 6,471,636 | |
Mortgage Loans Payable, Monthly Payment | $ 34,788 | | |
Mortgage Loans Payable, Interest Rate | 4.84% | | |
Mortgage Loans Payable, Maturity Period | 2024-08 | | |
LaGrange Marketplace [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 2,406,217 | 2,418,212 | |
Mortgage Loans Payable, Monthly Payment | $ 13,813 | | |
Mortgage Loans Payable, Interest Rate | 5.00% | | |
Mortgage Loans Payable, Maturity Period | 2020-03 | | |
Freeway Junction [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 8,150,000 | 8,150,000 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 4.60% | | |
Mortgage Loans Payable, Maturity Period | 2024-09 | | |
DF I-Edenton [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 400,000 | 650,000 | |
Mortgage Loans Payable, Monthly Payment | $ 250,000 | | |
Mortgage Loans Payable, Interest Rate | 3.75% | | |
Mortgage Loans Payable, Maturity Period | 2016-09 | | |
DF I-Moyock [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 391,723 | 418,538 | |
Mortgage Loans Payable, Monthly Payment | $ 10,665 | | |
Mortgage Loans Payable, Interest Rate | 5.00% | | |
Mortgage Loans Payable, Maturity Period | 2019-07 | | |
Graystone Crossing [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 4,000,000 | 4,000,000 | |
Mortgage Loans Payable, Monthly Payment | $ 20,386 | | |
Mortgage Loans Payable, Interest Rate | 4.55% | | |
Mortgage Loans Payable, Maturity Period | 2024-10 | | |
Bryan Station [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 4,625,000 | 4,625,000 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 4.52% | | |
Mortgage Loans Payable, Maturity Period | 2024-11 | | |
Crockett Square [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 6,337,500 | 6,337,500 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 4.47% | | |
Mortgage Loans Payable, Maturity Period | 2024-12 | | |
Harbor Point [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 710,339 | 732,685 | |
Mortgage Loans Payable, Monthly Payment | $ 11,024 | | |
Mortgage Loans Payable, Interest Rate | 5.85% | | |
Mortgage Loans Payable, Maturity Period | 2016-12 | | |
Pierpont Centre [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 8,450,000 | 8,450,000 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 3.95% | | |
Mortgage Loans Payable, Maturity Period | 2025-02 | | |
Alex City Marketplace [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 5,750,000 | 5,750,000 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 3.90% | | |
Mortgage Loans Payable, Maturity Period | 2025-04 | | |
Butler Square [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 5,640,000 | 5,640,000 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 4.08% | | |
Mortgage Loans Payable, Maturity Period | 2025-05 | | |
Brook Run Shopping Center [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 10,950,000 | 10,950,000 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 3.90% | | |
Mortgage Loans Payable, Maturity Period | 2025-06 | | |
Beaver Village I and II [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 9,400,000 | 9,400,000 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 4.73% | | |
Mortgage Loans Payable, Maturity Period | 2025-07 | | |
Columbia Fire Station [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 459,114 | 450,053 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 8.00% | | |
Mortgage Loans Payable, Maturity Period | 2025-07 | | |
Sunshine Plaza [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 5,900,000 | 5,900,000 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 4.57% | | |
Mortgage Loans Payable, Maturity Period | 2025-08 | | |
Barnett Portfolio [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 8,770,000 | 8,770,000 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 4.30% | | |
Mortgage Loans Payable, Maturity Period | 2025-09 | | |
Grove Park Shopping Center [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 3,800,000 | 3,800,000 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 4.52% | | |
Mortgage Loans Payable, Maturity Period | 2025-10 | | |
Parkway Plaza Shopping Center [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 3,500,000 | 3,500,000 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 4.57% | | |
Mortgage Loans Payable, Maturity Period | 2025-10 | | |
Conyers Crossing [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 5,960,000 | 5,960,000 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 4.67% | | |
Mortgage Loans Payable, Maturity Period | 2025-10 | | |
Ft. Howard Square [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 7,100,000 | 7,100,000 | |
Mortgage Loans Payable, Monthly Payment | Interest only | | |
Mortgage Loans Payable, Interest Rate | 4.57% | | |
Mortgage Loans Payable, Maturity Period | 2025-10 | | |
South Carolina Food Lions Note [Member] | | | |
Debt Instrument [Line Items] | | | |
Mortgages and other indebtedness | $ 12,346,548 | $ 12,375,000 | |
Mortgage Loans Payable, Monthly Payment | $ 68,320 | | |
Mortgage Loans Payable, Interest Rate | 5.25% | | |
Mortgage Loans Payable, Maturity Period | 2024-01 | | |