Quarterly report pursuant to Section 13 or 15(d)

Property Portfolio (Schedule of pro forma consolidated revenue, net loss, and earnings per share) (Details)

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Property Portfolio (Schedule of pro forma consolidated revenue, net loss, and earnings per share) (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Revenue $ 9,425,057 $ 4,909,852 $ 25,736,802 $ 13,808,974
Net income (loss) 653,952 (2,047,241) (1,053,239) (4,616,832)
Net income (loss) attributable to common stockholders $ 428,546 $ (2,047,241) $ (1,284,133) $ (4,616,832)
Income (loss) attributable to common stockholders per share - basic and diluted $ 0.02 $ (0.12) $ (0.07) $ (0.71)
Weighted average shares outstanding 21,522,251 17,371,743 18,938,367 6,514,230