Indebtedness - Additional Information (Detail) | Jul. 30, 2015USD ($) | Jul. 10, 2015USD ($)Loans | May. 27, 2015USD ($) | May. 20, 2015USD ($) | Feb. 20, 2015USD ($) | Jan. 23, 2015USD ($) | Jul. 31, 2015USD ($) | Jun. 30, 2015USD ($) | Jun. 30, 2015USD ($) | Jul. 01, 2015USD ($) |
Debt Instrument [Line Items] | | | | | | | | | | |
Senior unsecured term loan facility | | | | | $ 50,000,000 | | | | | |
Loss on extinguishment of debt | | | | | | | | $ 180,000 | $ 407,000 | |
Socastee Commons Myrtle Beach [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Debt instrument maturity date | | | | | | | | | Jan. 6, 2023 | |
Columbus Village In Virginia Beach [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Debt instrument maturity date | | | | | | | | | Apr. 5, 2018 | |
Whetstone Apartments [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Repayment of term loan facility | | | | $ 17,800,000 | | | | | | |
Loss on extinguishment of debt | | | | $ 100,000 | | | | | | |
Smith's Landing [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Amount borrowed under credit facility | | | $ 21,600,000 | | | | | | | |
Debt instrument maturity date | | | | | | | | | Jun. 1, 2035 | |
Repayment of term loan facility | | | 24,400,000 | | | | | | | |
Loss on extinguishment of debt | | | $ 100,000 | | | | | | | |
Smith's Landing [Member] | Collateralized Mortgage Obligations [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Debt assumed, interest rate | | | 4.05% | | | | | | | |
Johns Hopkins Village [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Debt instrument maturity date | | | | | | | | | Jul. 30, 2018 | |
Subsequent Event [Member] | Socastee Commons Myrtle Beach [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Debt assumed, interest rate | | | | | | | | | | 4.57% |
Outstanding principal amount of debt | | | | | | | | | | $ 5,000,000 |
Subsequent Event [Member] | Columbus Village In Virginia Beach [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Outstanding principal amount of debt | | $ 8,800,000 | | | | | | | | |
Number of loans | Loans | | 2 | | | | | | | | |
Subsequent Event [Member] | Columbus Village In Virginia Beach [Member] | LIBOR [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Stated interest rate, basis spread on variable rate | | 2.00% | | | | | | | | |
Subsequent Event [Member] | Johns Hopkins Village [Member] | Construction Loans [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Aggregate amount available under the construction loan | $ 50,000,000 | | | | | | | | | |
Subsequent Event [Member] | Johns Hopkins Village [Member] | LIBOR [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Stated interest rate, basis spread on variable rate | 1.90% | | | | | | | | | |
Revolving Credit Facility [Member] | New Credit Facility [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Debt instrument maturity date | | | | | | | | | Feb. 20, 2019 | |
Revolving credit facility, extension option | | | | | | | | | 1 year | |
Revolving Credit Facility [Member] | Minimum [Member] | New Credit Facility [Member] | LIBOR [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Stated interest rate, basis spread on variable rate | | | | | | | | | 1.40% | |
Revolving Credit Facility [Member] | Maximum [Member] | New Credit Facility [Member] | LIBOR [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Stated interest rate, basis spread on variable rate | | | | | | | | | 2.00% | |
Senior Unsecured Term Loan Facility [Member] | Minimum [Member] | LIBOR [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Stated interest rate, basis spread on variable rate | | | | | 1.35% | | | | | |
Senior Unsecured Term Loan Facility [Member] | Maximum [Member] | LIBOR [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Stated interest rate, basis spread on variable rate | | | | | 1.95% | | | | | |
Term Loan Facility [Member] | New Credit Facility [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Debt instrument maturity date | | | | | | | | | Feb. 20, 2020 | |
Term Loan Facility [Member] | Minimum [Member] | New Credit Facility [Member] | LIBOR [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Stated interest rate, basis spread on variable rate | | | | | | | | | 1.35% | |
Term Loan Facility [Member] | Maximum [Member] | New Credit Facility [Member] | LIBOR [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Stated interest rate, basis spread on variable rate | | | | | | | | | 1.95% | |
Operating Partnership [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Amount borrowed under loan agreements for construction | | | | | | | | | $ 14,400,000 | |
Operating Partnership [Member] | New Credit Facility [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Amount borrowed under credit facility | | | | | $ 54,000,000 | | | | | |
Repayment of term loan facility | | | | | 50,000,000 | | | | | |
Repayment of other indebtedness | | | | | 39,000,000 | | | | | |
Loss on extinguishment of debt | | | | | 200,000 | | | | | |
Credit facility, amount outstanding | | | | | | | | 83,000,000 | $ 83,000,000 | |
Operating Partnership [Member] | Prior Credit Facility [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Amount borrowed under credit facility | | | | | | $ 5,000,000 | | | | |
Debt instrument maturity date | | | | | | | | | May 13, 2016 | |
Credit facility termination date | | | | | | | | | Feb. 20, 2015 | |
Operating Partnership [Member] | Subsequent Event [Member] | New Credit Facility [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Amount borrowed under credit facility | | | | | | | $ 11,000,000 | | | |
Credit facility, amount outstanding | | | | | | | $ 94,000,000 | | | |
Operating Partnership [Member] | Revolving Credit Facility [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Debt instrument maturity date | | | | | | | | | May 13, 2016 | |
Senior revolving credit facility, maximum borrowing capacity | | | | | | | | $ 155,000,000 | $ 155,000,000 | |
Operating Partnership [Member] | Revolving Credit Facility [Member] | New Credit Facility [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Interest rate | | | | | | | | 1.94% | 1.94% | |
Operating Partnership [Member] | Senior Unsecured Credit Facility [Member] | New Credit Facility [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Senior revolving credit facility, maximum borrowing capacity | | | | | 200,000,000 | | | | | |
Operating Partnership [Member] | Senior Unsecured Revolving Credit Facility [Member] | New Credit Facility [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Senior revolving credit facility, maximum borrowing capacity | | | | | 150,000,000 | | | | | |
Operating Partnership [Member] | Senior Unsecured Term Loan Facility [Member] | New Credit Facility [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Senior unsecured term loan facility | | | | | $ 50,000,000 | | | | | |
Operating Partnership [Member] | Term Loan Facility [Member] | New Credit Facility [Member] | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | |
Interest rate | | | | | | | | 1.89% | 1.89% | |