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Equity - Additional Information (Detail) - USD ($) |  | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Aug. 07, 2015 | Apr. 02, 2014
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |
Common stock, par value | $ 0.001 | $ 0.001 | $ 0.001 |  |
Common stock, shares authorized | 20,000,000 | 20,000,000 | 20,000,000 |  |
Common stock, shares issued | 9,992,941 | 9,992,941 | 9,992,941 |  |
Common stock, shares outstanding | 9,992,941 | 9,992,941 | 9,992,941 |  |
Company's ownership percent | 93.10% | 93.10% | 100.00% |  |
Conversion of stock description |  | On or after 12 months after becoming a holder of OP Units, each limited partner, other than the Company, has the right, subject to the terms and conditions set forth in the partnership agreement of the Operating Partnership, to require the Operating Partnership to redeem all or a portion of such units in exchange for cash or, at the Company’s option, shares of our common stock on a one-for-one basis. |  |  |
OP units held by non-controlling limited partners |  | 745,879 |  |  |
At-the-Market Program [Member] |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |
Sale of common stock sold under sale agreement | 32,627 | 0 |  |  |
Average sales price of common stock sold | $ 9.19 | $ 9.19 |  |  |
Gross proceeds from issuance of common stock | $ 300,000 |  |  |  |
Net proceeds from issuance of common stock | $ 295,000 |  |  |  |
Maximum [Member] |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |
Securities allowed for issuance |  |  |  |  | $ 300,000,000
Maximum [Member] | At-the-Market Program [Member] |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |
Common stock, value authorized |  |  |  | $ 30,000,000 |
Common Stock [Member] |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |
Value of common stock issuable per registration statement |  | $ 23,300,000 |  |  |
Common Stock [Member] | Universal Registration Statement [Member] |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |
Common stock, shares issued | 2,156,080 | 2,156,080 |  |  |

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