Loans Payable - Summary of Loans Payable (Detail) (USD $) | 6 Months Ended | | |
Jun. 30, 2014 | Jan. 31, 2014 | Dec. 31, 2013 |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgages and other indebtedness | $95,236,145 | ' | $94,562,503 |
January 2016 [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 'Interest only | ' | ' |
Mortgage Loans Payable, Interest Rate | 9.00% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2016-01 | ' | ' |
Mortgages and other indebtedness | 2,160,000 | ' | 0 |
Senior Convertible Notes [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 'Interest only | ' | ' |
Mortgage Loans Payable, Interest Rate | 9.00% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2018-12 | ' | ' |
Mortgages and other indebtedness | 6,000,000 | ' | 6,000,000 |
Senior Non-Convertible Notes [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 'Interest only | ' | ' |
Mortgage Loans Payable, Interest Rate | 9.00% | 9.00% | ' |
Mortgage Loans Payable, Maturity Period | '2015-12 | ' | ' |
Mortgages and other indebtedness | 4,000,000 | ' | 4,000,000 |
Shoppes at Eagle Harbor [Member] | Interest at Fixed Rate of 4.34% [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 24,692 | ' | ' |
Mortgage Loans Payable, Interest Rate | 4.34% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2018-03 | ' | ' |
Mortgages and other indebtedness | 3,839,802 | ' | 3,905,321 |
Lumber River Plaza [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 18,414 | ' | ' |
Mortgage Loans Payable, Interest Rate | 5.65% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2015-05 | ' | ' |
Mortgages and other indebtedness | 2,934,581 | ' | 2,973,987 |
Monarch Bank Building [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 9,473 | ' | ' |
Mortgage Loans Payable, Interest Rate | 4.15% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2017-12 | ' | ' |
Mortgages and other indebtedness | 1,457,284 | ' | 1,483,230 |
Perimeter Square [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 28,089 | ' | ' |
Mortgage Loans Payable, Interest Rate | 6.38% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2016-06 | ' | ' |
Mortgages and other indebtedness | 4,356,149 | ' | 4,417,812 |
Riversedge North [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 13,556 | ' | ' |
Mortgage Loans Payable, Interest Rate | 6.00% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2019-01 | ' | ' |
Mortgages and other indebtedness | 1,029,539 | ' | 2,061,790 |
Walnut Hill Plaza [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 25,269 | ' | ' |
Mortgage Loans Payable, Interest Rate | 6.75% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2014-07 | ' | ' |
Mortgages and other indebtedness | 3,430,592 | ' | 3,464,465 |
Harps at Harbor Point [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 18,122 | ' | ' |
Mortgage Loans Payable, Interest Rate | 3.99% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2015-12 | ' | ' |
Mortgages and other indebtedness | 3,293,831 | ' | 3,335,628 |
Twin City Commons [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 17,827 | ' | ' |
Mortgage Loans Payable, Interest Rate | 4.86% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2023-01 | ' | ' |
Mortgages and other indebtedness | 3,304,682 | ' | 3,330,108 |
Shoppes at TJ Maxx [Member] | Maturity on May 2020 [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 33,880 | ' | ' |
Mortgage Loans Payable, Interest Rate | 3.88% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2020-05 | ' | ' |
Mortgages and other indebtedness | 6,329,491 | ' | 6,409,077 |
Bixby Commons [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 'InterestB only | ' | ' |
Mortgage Loans Payable, Interest Rate | 2.77% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2018-06 | ' | ' |
Mortgages and other indebtedness | 6,700,000 | ' | 6,700,000 |
Bank Line of Credit [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 'Interest only | ' | ' |
Mortgage Loans Payable, Interest Rate | 4.50% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2015-05 | ' | ' |
Mortgages and other indebtedness | 2,000,000 | ' | 2,000,000 |
Forrest Gallery [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 50,973 | ' | ' |
Mortgage Loans Payable, Interest Rate | 5.40% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2023-09 | ' | ' |
Mortgages and other indebtedness | 9,075,000 | ' | 9,075,000 |
Jenks Reasors [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 'Interest only | ' | ' |
Mortgage Loans Payable, Interest Rate | 4.25% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2016-09 | ' | ' |
Mortgages and other indebtedness | 8,550,000 | ' | 8,550,000 |
Tampa Festival [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 50,797 | ' | ' |
Mortgage Loans Payable, Interest Rate | 5.56% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2023-09 | ' | ' |
Mortgages and other indebtedness | 8,803,488 | ' | 8,859,888 |
Starbucks/Verizon [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 7,405 | ' | ' |
Mortgage Loans Payable, Interest Rate | 6.50% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2015-07 | ' | ' |
Mortgages and other indebtedness | 596,706 | ' | 621,197 |
Winslow Plaza [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 'Interest only | ' | ' |
Mortgage Loans Payable, Interest Rate | 5.22% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2015-12 | ' | ' |
Mortgages and other indebtedness | 5,000,000 | ' | 5,000,000 |
South Carolina Food Lions Note [Member] | ' | ' | ' |
Debt Instrument [Line Items] | ' | ' | ' |
Mortgage Loans Payable, Monthly Payment | 'Interest only | ' | ' |
Mortgage Loans Payable, Interest Rate | 5.25% | ' | ' |
Mortgage Loans Payable, Maturity Period | '2024-01 | ' | ' |
Mortgages and other indebtedness | $12,375,000 | ' | $12,375,000 |