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Real Estate and Lease Intangibles - Pro-Forma Condensed Consolidated Statements of Operations as Properties Acquired (Detail) - USD ($) | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015
Operating Data: |  |
Total operating revenue | $ 18,205,615 | $ 13,552,489
Net income (loss) attributable to the company | $ 900,749 | $ (418,776)
Share and Per-share Data: |  |
Earnings (loss) per share of common stock – basic and diluted (in dollars per share) | $ 0.09 | $ (0.05)
Weighted-average common shares outstanding – basic and diluted (in shares) | 10,007,350 | 8,639,397

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