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Shareholder Equity and Noncontrolling Interests - Additional Information (Detail) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2017 | Jun. 30, 2017 | Aug. 04, 2017
Class Of Stock [Line Items] |  |  |  |
Dividends paid |  | $ 0 | $ 126,000 |
OP Units issued | 166,604 | 166,604 | 166,604 |
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable | $ 1,654,000 |  |  |
OP Units outstanding | 3,035,654 | 3,035,654 | 3,035,654 |
OP Units redemption value | $ 29,962,000 | $ 29,962,000 | $ 29,962,000 |
Stock price | $ 9.87 | $ 9.87 | $ 9.87 |
Subsequent Event |  |  |  |
Class Of Stock [Line Items] |  |  |  |
At-the-market sales agreement, common stock par value per share |  |  |  | $ 0.01
At-the-market agreement to sell common shares, maximum offer price |  |  |  | 150,000
At-the-market agreement to sell common shares, compensation to sales agents |  |  |  | 2.00%
At-the-market sales agreement, obligation to sell common shares |  |  |  | $ 0

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- Definition Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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